How much force in Newtons is required to accelerate a shotput weighing 4kg at 21 m/s2?

Answers

Answer 1

Answer:

[tex] \Huge{\boxed{84 N}} [/tex]

Explanation:

The amount of force required here can be found by using the formula

force = mass × acceleration

where

mass is in kg

acceleration in m/s²

From the question

mass = 4 kg

acceleration= 21 m/s²

We have

force = 4 × 21 = 84

We have the final answer as

84 N

Related Questions

How are the pieces of hard candy like pieces of rock (sediment)? how are they different?.

Answers

Sedimentary rocks are formed when sediments are compacted and cemented together. Similarly, when magma cools it hardens into igneous rock.

I was able to sculpt a model out of the sedimentary rock by applying pressure to the candy with a book. This is similar to sedimentary rock formations in nature. After the rock fragments pile up in layers the pressure causes the sediment to become sedimentary rock.

Great Plains rock is sedimentary Rocky Mountain rock is igneous. They were formed differently and need not be formed together. The Great Plains and the Rocky Mountains are similar in this respect. Both lie on the same tectonic plate known as the North American plate.

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different objects sitting around in a room feel warmer or cooler. if they are in thermal equilibrium, what must be true of their temperatures?

Answers

To learn the equilibrium and temperature.

What is equilibrium?

When Newton's first law is true, the equilibrium state of an object is present. When all external forces (including moments) operating on an object in a reference coordinate system are equal, the object is said to be in equilibrium. The net effect of all external forces and moments acting on this object is zero as a result.

What is temperatue?

Temperature is a unit of measurement that can be expressed on a variety of scales, including Fahrenheit and Celsius. Temperature shows the direction of the spontaneous movement of heat energy, i.e., from a hotter body (one with a higher temperature) to a colder body (one with a lower temperature).

Their temperatures must be equal if two bodies are in thermal equilibrium.

As for coldness or warmth, we generally observe that metals feel colder while non metallic objects don't (i.e. comparatively they feel warmer than metals). This is due to the fact that metals are good conductor of heat. So when we touch a metallic body, heat flows from our body and is transferred to other points of the metal object. Since our body loses heat, we feel cold. In non metals, this conduction of heat from point of contact to other locations does not happen.

Therefore, the amount of heat loss from our body is much smaller. So we don't feel that cold.

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An object of unknown mass is initially at rest and dropped from a height h. It reaches the ground with a velocity v1. The same object is then raised again to the same height h but this time is thrown downward with velocity v1. It now reaches the ground with a new velocity v2. How is v2 related to v1?.

Answers

The relationship between the two speeds v1 and v2 is v2=v1√2 when an

object of unknown mass is initially at rest and dropped from a height h

The given parameters;

initial velocity of the object, u = 0

object height = h

final velocity = v1

initial velocity for the second movement, = v1

final speed of the object in the second movement, = v2

The relationship between the initial speed and the final speed is given below;

For the first movement;

v1^2 = v0^2+2gh

v1^2 = 2gh

For second motion;

v2^2 = v1^2+2gh

Relationship between the two speeds;

v2^2 = v1^2+v1^2

v2=√2v1

Thus, the relationship between the two speeds v1 and v2 is v2 = √2v1

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consider a neutron star with a mass equal to the sun, a radius of 17 kmkm , and a rotation period of 1.0 ss . what is the speed of a point on the equator of the star? express your answer with the appropriate units.

Answers

The answer is 42300km. The gravitational field on the surface of a neutron star is about 2.0×1012 m/s2, about 2×1011 times that of the Earth.

Neutron stars form when giant stars run out of fuel and collapse. The central part of the star, the core, collapses, crushing each proton and electron into a neutron. Neutron stars are extreme objects with diameters of 10 to 20 km. Their density is 1017 kg/m3 (Earth's density is about 5×103 kg/m3, even white dwarfs have a density of one million times less). A small, very dense star composed almost entirely of densely packed neutrons. About 10 km radius (the size of Manhattan). Pulsar. A source of short radio bursts with precise timing. Probably a rotating neutron star. lighthouse model.

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if two objects, each with a mass of 4.1x10^2 kg, produce a gravitational force between them if 9.2x10^-6 N, what is the distance between them?

Answers

Taking into account the Universal Law of Gravitation, the distance between the objects is 1.10396×10⁻⁶ m².

Universal Law of Gravitation

The Universal Law of Gravitation establishes that bodies, by the simple fact of having mass, experience a force of attraction towards other bodies with mass, called gravitational force.

This law states that the gravitational force between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance that separates them, expressed as:

[tex]F=G\frac{Mm}{d^{2} }[/tex]

where:

G is the universal gravitational constant, with a value of 6.67×10⁻¹¹ [tex]\frac{Nm^{2} }{kg^{2} }[/tex].M and m are the masses of the bodies that interact.d is the distance that separates them.

Distance between two objects

In this case, you know:

F= 9.2×10⁻⁶ NG= 6.67×10⁻¹¹ [tex]\frac{Nm^{2} }{kg^{2} }[/tex]M= m= 4.1×10² kgd= ?

Replacing in the Universal Law of Gravitation:

[tex]9.2x10^{-6} N=6.67x10^{-11}\frac{Nm^{2} }{kg^{2} } \frac{4.1x10^{2} kgx 4.1x10^{2} kg}{d^{2} }[/tex]

Solving:

9.2×10⁻⁶ N÷ 6.67×10⁻¹¹ [tex]\frac{Nm^{2} }{kg^{2} }[/tex]= [tex]\frac{4.1x10^{2} kgx 4.1x10^{2} kg}{d^{2} }[/tex]

1.3793×10⁻¹⁷ kg²÷m²= [tex]\frac{168100 kg^{2} }{d^{2} }[/tex]

1.3793×10⁻¹⁷ kg²÷m²× d²= 168100 kg²

d²= 168100 kg²÷ 1.3793×10⁻¹⁷ kg²÷m²

d²= 1.2187341×10⁻¹² m²

d= √1.2187341×10⁻¹² m²

d= 1.10396×10⁻⁶ m²

Finally, the distance is 1.10396×10⁻⁶ m².

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If a flight is made from an area of lower pressure into an area of high pressure without the altimeter setting being adjusted, the altimeter will indicate
a) the actual altitude above sea level.
b) higher than the actual altitude above sea level
c) lower than the actual altitude above sea level.

Answers

If a flight is made from an area of lower pressure into an area of high pressure without the altimeter setting being adjusted, the altimeter will indicate option c - lower than the actual altitude above sea level.

When flying from a lower pressure area to a high-pressure area, the aircraft's altitude gradually rises while the altimeter remains constant; thus, the ALTIMETER indicates a lower altitude than the aircraft is actually flying. The quantity of gas particles with in air reduces as height increases atmosphere becomes less dense than air nearer to ocean level. It's what weathermen and mountain climbers refer to when they speak regarding "thin air." Thin air imposes fewer pressure than lesser air.

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A golfer swings the club with a force of 6,000 N. If the club makes contact with the golf ball for only 0.18 s, then what impulse is given to the golf ball?

Work out and use units

Answers

The impulse given to the ball by the golfer with a club is 1080 Ns.

What is impulse?

Impulse can be defined as the product of force and time.

To calculate the impulse given to the ball, we use the formula below.

Formula:

I = Ft.......... Equation 1

Where:

I = Impulse given to the ballF = Force applied to the ballt = Time

From the question,

Given:

F = 6000 Nt = 0.18s

Substitute these values into equation 1

I = 6000×0.18I = 1080 Ns

Hence, the impulse given to the ball is 1080 Ns.

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The same girl in number 3 (above) pushes another friend on the same skateboard.
If she pushes her friend with 60 N of force and the girl accelerates at 2.1 m/s² then
what is her friend's mass?

Answers

The mass of her friend is 28.57.

Force is a push or pulls upon an item because of the object's interaction with some other object. pressure is a power that can exchange the motion of an object. A force can reason an object with mass to alternate its speed, i.e., to boost up. pressure also can be described intuitively as a push or a pull. A force has each significance and course, making it a vector amount.

Calculation:-

given;

mass = ?

acceleration = 2.1 m/s

force = 60 N

Force = mass × acceleration

 mass = force/acceleration

           = 60 /2.1

           =  28.57 kg

The phrase 'Force' has a unique meaning. At this degree, it is absolutely appropriate to describe a force as a push or a pull. A force is not something that an object consists of or 'has in it. A force is exerted on one object through another. The concept of a force isn't always restricted to living matters or non-living matters.

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As your textbook notes, the paradox of stratification is that inequality is the result of.

Answers

Answer: abundance

Explanation: Paradox Inequality is the result of abundance. intended or unintended consequences of social processes and relationships. prevents social equality, and that this inequality ultimately leads to social conflict.

As your textbook notes, the paradox of stratification is that inequality is the result of the Universal Basic Income.

What is universal basic income ?

A sociopolitical idea known as universal basic income proposes that every member of a particular population receive a transfer payment on a regular basis without having to prove their ability to pay.

A legally mandated and equally distributed cash award is provided by the government to all people of a given nation under the sociopolitical financial transfer policy concept known as universal basic income (UBI). Local, regional, or national implementation of a basic income are all possible.

The phenomena of birthweight-specific mortality curves crossing when stratified on other exposures, most notably cigarette smoking, is known as the "birth weight conundrum." The dilemma has received a lot of attention in the literature, and a lot of explanations and fixes have been proposed.

Thus, As your textbook notes, the paradox of stratification is that inequality is the result of the Universal Basic Income.

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Individual cloud layers in the giant planets have different compositions because?.

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Ammonia crystals that have been frozen make up the majority of Jupiter and Saturn's clouds. Methane makes up the clouds on Uranus and Neptune. The composition of the clouds is determined by these worlds' temperatures.

With 75% of their mass made up of hydrogen and 25% of it made up of helium, Jupiter and Saturn, the two largest planets, share virtually the same chemical composition as the Sun. Jupiter and Saturn are commonly referred to as gas planets because hydrogen and helium are both gases on Earth.

At any given altitude, Saturn's atmosphere is colder than Jupiter's, hence the different cloud layers are located further into Saturn's atmosphere. However, methane cannot condense in the warmer troposphere, only in the extremely cold upper troposphere of Uranus and Neptune.

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to remove the refrigerant from a system without any testing or processing and to be put back into the same system is called .

Answers

To remove the refrigerant from a system without any testing or processing and to be put back into the same system is called recovery.

Recover means to remove refrigerant in any condition from an appliance and to store it in an external container without necessarily testing or processing it in any way. Recovery efficiency means the percentage of refrigerant in an appliance that is recovered by a piece of recovery and/or recycling equipment.

In the vapor recovery method, the refrigerant is removed from the HVAC system in a vapor state. The vapor is then condensed into a liquid by the recovery unit and transferred to the recovery cyclinder.

To put it as simply as possible, refrigerant recovery refers to the transfer of a system's refrigerant into a refillable refrigerant cylinder during repairs or replacement of the air-conditioning system. By looking into refrigerant recovery, you can prevent refrigerants from leaking and releasing into the atmosphere.

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Which of the following factors would most likely cause a hurricane to decrease in strength?
Moving toward tropical water
Staying over a warm body of water for a long time
Increasing the number of large clouds
Moving over a landmass

Answers

Answer:

moving over a landmass because moving for a long period of time will cause for it to slow down.

The factor that would most likely cause a hurricane to decrease in strength is staying over a warm body of water for a long time. The correct option is B.

What is a hurricane?

Because of their larger size, longer duration, and greater variety of ways to damage property, hurricanes cause far more overall destruction than tornadoes.

A hurricane is a tropical storm with winds that have reached 74 miles per hour or higher. A storm's eye is typically 20-30 miles wide and can extend for 400 miles.

These storms weaken and disintegrate as they move over cold water or land and lose contact with the hot water that powers them.

Recent research has found a link between ocean surface temperatures and the intensity of tropical storms. Warmer waters fuel more energetic storms.

Thus, the correct option is B.

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where are the turning points of the motion? express your answers in meters. enter your answers separated by a comma.

Answers

When K = 0, the motion's turning points take place. Think about frictionless one-dimensional motion in the x-direction. So whenever Etotal = U, K(x) = 0 and v = 0. (x).

How to describe friction

friction is the resistance to a thing moving or rolling over another solid object. Although frictional forces can be advantageous, such as the traction required to walk without slipping, they also provide a significant amount of resistance to motion.

What leads to friction?

Because of the imperfections on the two surfaces in contact, friction is produced. Small imperfections can be found on even the smoothest surfaces, and when two surfaces interact with one another, they cause friction.

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What would happen to the gravitational force felt between two objects if the radius between them were doubled?.

Answers

The force of gravitational attraction is reduced by a factor of 4 when the separation distance between two objects is doubled (increased by a factor of 2).

What is gravitational force?

The gravitational force, which is what pushes mass-containing objects toward one another. We frequently consider the pull of gravity from the Earth. Your body is kept on the ground by this force. However, all mass-bearing objects are pulled toward one another by gravity.

Greater gravitational forces will be used to attract heavier things since the gravitational force is directly proportional to the mass of both interacting objects. Therefore, the gravitational attraction between two objects grows as their respective masses do as well. The force of gravity between two objects is equal to their respective masses multiplied by two. If one of the items triples in mass, the gravitational pull between them will also triple.

What is radius?

The radius of a circle is the separation between its center and circumference. Always, the diameter is twice the radius. As a result, the formula is created by multiplying the diameter by two.

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Question 2 of 10
Which of the statements below about buoyancy is true?
A. Buoyancy pushes objects down, in the same direction as gravity.
B. Buoyancy is a force that acts on objects that are placed in a fluid.
C. All objects that experience the force of buoyancy float.
D. If the buoyant force is greater than the force of gravity, the object
will sink.
B is the one

Answers

Buoyancy or Buoyant force is the force which acts on the objects that are placed in a fluid. Thus, the correct option is B.

What is Buoyant force?

The buoyant force or buoyancy is the upward force that is exerted on an object which is fully or partially immersed in a fluid. This upward force is also called Up-thrust. Due to buoyant force, a body that is submerged in a fluid appears to lose its weight in the fluid, i.e. appears to be lighter. The factors which affect buoyant force are volume of the fluid displaced and the volume of the body that is submerged in fluid.

An example where buoyant force can be observed is a ship which is floating in the middle of the sea, an anchor that sinks when thrown in the water, and a fish which is hovering in the middle of the waterbody.

Therefore, the correct option is B.

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What net force is required to horizontally accelerate a 90 kg person from rest to 66 m/s in
1.3?

Answers

The net force required to horizontally accelerate a 90 kg person from rest to 66 m/s is  4596.3 N.

Acceleration is the rate of change of the velocity of an item with appreciation to time. Accelerations are vector quantities. The orientation of an item's acceleration is given by the orientation of the net pressure appearing on that object.

Given;

mass = 90 kg

initial velocity = 0

final velocity = 66 m/s

time = 1.3 sec

V = u + at

66 = 0 + a × 1.3

a = 66/1.3

a = 50.77 m/s²

F = ma

   = 90 × 50.77 N

   = 4596.3 N

Acceleration is the charge at which velocity modifications with time, in terms of each speed and route. A factor or an object moving in a straight line is accelerated if it quickens or slows down. movement on a circle is extended despite the fact that the rate is consistent because the course is continually changing.

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6. suppose a certain musical instrument consists of a pipe which is open at one end and closed at the other. music is produced as sound waves move through the pipe, creating standing wave patterns. the pipe has a length of 80 cm. q1) find the wavelength of the first, third, and fifth harmonics (show your work).

Answers

The wavelength of the first third and fifth harmonics is ∝ = 64cm.

Solution:

[tex]\frac{\pi }{4} = 80cm , \pi = 320cm[/tex]

[tex]\pi = 80 cm\\[/tex] [tex]\pi = 106.67cm[/tex]

[tex]\frac{5\pi }{4}=80cm[/tex]

[tex]\pi = 64cm[/tex]

The bottom opening of closed-ended tubular piles is covered with a steel plate or a conical tip. A steel plate or conical tip is welded into the opening. These covers are often called end caps. In contrast, open-ended tubular piles do not have end caps.

When a sound wave is transmitted through an open pipe and reflected from the Earth. The incident and reflected waves then have the same frequency and propagate in opposite directions, forming a superimposed standing wave. An open-ended instrument has both ends open to the air. An example would be a trumpet-like instrument.

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Four ample of teel, lead, alcohol and gla all have the ame ma and are all initially at 20 °C. After 100 calorie of heat i added to each ample, the final temperature are 38. 2 °C for the teel, 85. 6 °C for the lead, 23. 4 °C for the alcohol, and 30 °C for the gla. Which of thee four material ha the larget pecific heat capacity?

Answers

The larget specific heat capacity is the alcohol. Option A.

The specific heat of a substance is the heat capacity of a sample of the substance divided by the mass of the sample, sometimes called the mass heat capacity. Water has a very high specific heat. That means it has to absorb a lot of energy before the temperature changes.

On the other hand, sand and asphalt have low specific heat. This means that the temperature changes faster. The temperature rise in milk is higher because the specific heat of water is greater than that of milk. Water has the highest specific heat capacity that any liquid can produce. Specific heat is defined as the amount of heat that one gram of material must absorb or release to change its temperature by one degree Celsius.

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a 2.5-kg brick falls to the ground from a 3-m-high roof. what is the approximate kinetic energy of the brick just before it touches the ground? * 1 point a) 75 j b) 38 j c) 12 j d) 11 j

Answers

The approximate kinetic energy of the brick just before it touches the ground is 75J. Option A.

Solution:

Mass of brick = m = 2.5 kg

Height of roof = 3 m

Let v be the final velocity of the brick just before hitting the ground.

The kinetic energy of an object is given by KE = [tex]\frac{1}{2} *M *V^{2}[/tex]

v must be calculated before calculating KE.

You can calculate the required variables using the formula where u is the initial velocity, v is the final velocity, a is the acceleration, and s is the distance traveled.

Where s = roof height, u = 0 because the brick falls instead of being thrown, so a = gravitational acceleration = g = 9.8.[tex]\frac{M}{S^{2} }[/tex]

So[tex]V^{2}[/tex] = 0+2x9.8x3 = 58.8

So v = [tex]\sqrt{58.8}[/tex] = 7.66m/s

Now we can calculate the kinetic energy = [tex]\frac{1}{2} *m*v^{2} = \frac{1}{2} *2.5*58.8 = 73.5 kg*\frac{m^{2} }{s^{2} }[/tex]

We also need to convert KE to Joules.

[tex]1kg*\frac{m^{2} }{s^{2} }[/tex] = 1 joule

Therefore kinetic energy = 73.5 joules.

When an object falls from rest its gravitational potential energy is converted into kinetic energy. Energy conservation as a tool allows us to calculate the velocity just before hitting the surface. When an object hits solid ground, all of its kinetic energy is converted into heat and sound energy. When an object falls to the ground in free fall its potential energy decreases, and its kinetic energy increases.

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The value of gravitational potential energy

A) can vary depending on the zero point

B) is always measured from the center of the Earth

C) is fixed for a specific height

D) depends only on the height above the Earth's surface

Answers

The answer would be A) Can vary depending on the zero point.

a stone tossed into a body of water creates a disturbance at the point of impact which lasts for 5.2 s. the wave speed is 29 cm/s. (a) over what distance on the surface of the water does the group of waves extend? (b) an observer counts 12 wave crests in the group. estimate the precision with which the wavelength can be determined.

Answers

(a) over the distance of 150.8   cm  on the surface of the water, the group of waves extends.

(b) an observer counts 12 wave crests in the group.  the precision with which the wavelength can be determined is  0.112 cm

We are provided with the time taken which is 5.2 s  and the wave speed which is 29 cm/s. Since  distance , d = velocity * time

=  29 cm/s *  5.2 s  = 150.8   cm

For the second part, λ=d / N,  where  λ is the wavelength and N is the number of wave crest

so λ= 150.8 /12 = 12.56 = 13  cm

so Δ λ =ε  λ²/ d  

 here ε = 0.1

so Δλ = 0.1*13²/150.8   = 0.112 cm

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suppose your standing on a train accelerating at 0.20 g. what minimum coefficient of static friction

Answers

The minimum coefficient of static friction between the man and the train accelerating at 0.20g is .020.

The acceleration of the train is 0.20g. g is the acceleration due to gravity.

The man standing in the train will also have the same acceleration as that of the train. So, the acceleration of the man standing in the train is 0.20g.

Let us assume that the mass of the man is M.

So,

in order to keep standing an go with the trains,

Friction force = The force on the man exerted by the train's acceleration.

Friction force = uN

u is the coefficient of static friction,

N is the normal reaction.

The Normal reaction will be equal to the weight of the man.

Weight of the man wil be mg. So,

Friction force = uMg

Th force due to train's acceleration,

F = M(0.2g)

Now,

M(0.2) = uMg

u = 0.2

So, the coefficient of static friction is 0.2.

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What type of a wave is light? A.electromagnetic
B. Mechanical

Answers

Answer:

A

Explanation:

Visible Light is generally considered part of the electromagnetic spectrum

What do we now believe is responsible for the canals observed on mars in the nineteenth and early twentieth centuries?.

Answers

We now think that the canals seen on Mars in the late nineteenth and early twentieth century were the result of optical illusions.

The canals of Mars, which appeared to be systems of long, straight lines on the surface of Mars, are now understood to be illusions caused by the unintentional alignment of craters and other natural surface features that are seen in telescopes close to their resolution limit. They sparked a lot of debate and influenced how people perceived the possibility of life beyond Earth in the late 19th and early 20th centuries.

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a 110 kg man lowers himself to the ground from a height of 12 m by holding on to a rope passed over a frictionless pulley and attached to a 74 kg sandbag. a.) with what speed does the man hit the ground? b.) is there anything he could do to reduce the speed with which he hits the ground?

Answers

a) Speed of the man will be

b) Yes the speed can be reduced by reducing the speed of the sandbag.

Speed can be defined as the rate of change of distance with respect to time.

Mathematically, speed is Distance / Time

Viewing the man-rope-sandbag as a system the total mass of the system will be 110 + 74 = 184 kg

height from the ground = S = 12 m

According to the second law of motion,

S = ut + 0.5 a t²

u = initial velocity = 0 m/s

t can be calculated from the above equation

a = 9.81 m/sec²

12 = 0 + 0.5 * 9.8 * t²

t² = 2.44

t = 1.5 sec

Now according to the first equation of motion,

v - u = at

Since 'u' is 0 'v' will be called as the speed of the man

v = 9.8 * 1.5

v = 14.7 m/se

The speed of the man by which he will hit the ground is 14.7 m/sec.

b) If the weight of the sandbag is increased, the man can reduce his acceleration and consequently the speed with which he hits the ground will decrease.

It is important to understand that terminal velocity and acceleration are also dependent on certain variables, but these variables are not subject to change.

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A firefighter directs a stream of water from a fire hose at an angle of 40.0° above the horizontal. If the velocity of the stream is 39.0 m/s, what is
the furthest he can stand from the building and still hit it with water? t = Vy/g and x = Vx*2t

Answers

Firefighter can hit with water while standing at distance of 153 m from building.

What is a projectile motion?

The projectile travels the path with a parabolic trajectory due to the effect of gravity. No horizontal forces so there is no horizontal acceleration.

The velocity of a projectile has horizontal component and the vertical component.

The vertical component of the velocity, [tex]\displaystyle V_y = Vsin\theta[/tex]

The horizontal component of the velocity, [tex]\displaystyle V_x = Vcos\theta[/tex]

Given the angle θ with the X- axis = 40°

The velocity of the stream V = 39 m/s

The Y component of the velocity, Vy = 39× sin 40°

Vy = 25.1 m/s

The X component of the velocity, Vx = 39× cos 40°

Vx = 29.88 m/s

The time , t = Vy/g = 25.2/9.8 = 2.56 sec

The distance from the building, [tex]x = V_x\times 2t[/tex]

x = 29.88 ×2×2.56

x = 153 m

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on the basis of your answer to part c, would you say that the friction force is conservative or nonconservative?

Answers

Due to the fact that the work relies on the chosen path, friction is non-conservative. a force that prevents two solid objects from rolling or sliding over one another.

How to describe friction

friction is the resistance to a thing moving or rolling over another solid object. Although frictional forces can be advantageous, such as the traction required to walk without slipping, they also provide a significant amount of resistance to motion.

What leads to friction?

Because of the imperfections on the two surfaces in contact, friction is produced. Small imperfections can be found on even the smoothest surfaces, and when two surfaces interact with one another, they cause friction.

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Using the formula for 'Kinetic Energy, what is the kinetic energy for an
object that weighs 40g and moving at 10 m/s?

Answers

200 ms²  is the kinetic energy for an object that weighs 40g and moving at 10 m/s.

What are kinetic energy ?

Kinetic energy is the power that an object has had as a result of motion. To accelerate an object, a power must be supplied to it. To apply a force, we must exert effort. The power is transported to the object when work is accomplished, which causes it to move at a new, constant pace.

What makes kinetic energy so important?

The capacity to perform work is unquestionably the most important characteristic of kinetic energy. Force acting on to an object while it is traveling is referred to as work. Energy and work are interchangeable because of their close relationship.

Briefing:

Using Kinetic Energy Formula:

K.E  = 1/2 mv²

K.E. = 1/2 * 40 * 10

K.E. = 200 ms²

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two asteroids are 75000 m apart one has a mass of 8 x 10^7 kg if the force of gravity between them is 1.14 what is the mass of the asteroid
3.4 x 10^11 kg
8.3 x 10 ^12 kg
1.2 x 10 ^12 kg
1.2 x 10^10 kg

Answers

Answer:

1.2×10¹² kg

Explanation:

from

[tex]f = \frac{gm1m2 }{r {}^{2} } [/tex]

[tex]m2 = \frac{fr {}^{2} }{gm1} [/tex]

[tex]m2 = \frac{1.14 \times (75000 { )}^{2} }{6.67 \times {10}^{ - 11} \times 8 \times {10}^{7} } [/tex]

HENCE M2= 1.2×10¹²kg

a tennis ball cannon projects a ball vertically upward with an initial speed of 60 m/s. assuming negligible air resistance, with what speed will the ball be moving after 2.0 seconds.

Answers

Answer:

40.4 m/s

Explanation:

v = v o  - at

  = 60 - 9.81 (2) = 40.4 m/s

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