A is thrown up into the air with initial vem/s. How fast is the ball moving when it first reachemeters?

The momentum of the driver is  1,750 kgm/s.

Momentum refers to an object's tendency to maintain its velocity (or speed) in a straight line unless acted upon by an external force.

The magnitude of momentum is determined from the product of mass and velocity of the object.

The momentum of the driver is calculated as follows;

P = mv

where;

P = 70 kg x 25 m/s

P = 1,750 kgm/s

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Answer:

neon and argon

Explanation:

because they are inert gas

The wavelength of the sound wave that has a frequency of 400Hz is 7.5 × 10⁵m.

Wavelength is the length of a single cycle of a wave, as measured by the distance between one peak or trough of a wave and the next.

It is often designated in physics as λ, and corresponds to the velocity of the wave divided by its frequency.

According to this question, a 400Hz tuning fork is vibrating, producing a sound wave in the air. The wavelength is calculated as follows:

λ = 3 × 10⁸ ÷ 400

λ = 7.5 × 10⁵m

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Answer:

The correct answer is A. The current moving through the wire made the nail into an electromagnet.

An electromagnet is created when a current is passed through a wire. The flow of electrons creates a magnetic field, which can attract or repel other magnetic objects. In this case, when the student wrapped the copper wire around the nail and connected it to a battery, the flow of electrons created a magnetic field around the nail. This magnetic field allowed the student to pick up the staples because they were attracted to the nail, which was now acting as an electromagnet.

Forensic scientists will investigate the fire by looking for clues as to what caused it and how it spread. They will collect evidence such as burn patterns and debris, and analyze the scene to determine the origin of the fire.

What is debris?

Debris is any loose material (solid or liquid) that is scattered or discarded, such as the remains of a wrecked or destroyed structure or object. Common examples of debris include rubble, broken glass, fallen tree branches, discarded plastic, scrap metal, and other discarded materials. Debris can also include materials that are the by-product of a process, such as the dust created by grinding or sawing. Debris can also be the result of natural disasters or human activities. Debris can be found in any environment and can cause environmental or safety hazards if left unchecked.

Therefore, Forensic scientists will investigate the fire by looking for clues as to what caused it and how it spread. They will collect evidence such as burn patterns and debris, and analyze the scene to determine the origin of the fire.

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Newton's third law of motion states that "for every action, there is an equal and opposite reaction." In the case of a hose pipe, this law applies to the forces involved in the flow of water through the hose.

When water is flowing through the hose, it is being accelerated by the pressure difference between the inlet and outlet of the hose. As the water moves through the hose, it exerts a force on the walls of the hose, pushing them outwards. This is the "action" described in Newton's third law.

According to the law, there must be an equal and opposite "reaction" force. In this case, the reaction force is the force that the hose exerts on the water. The force of the hose pushing outwards is equal and opposite to the force of the water pushing inwards.

This reaction force is what allows the water to flow through the hose. Without it, the water would not be able to move through the hose and would instead remain stationary.

So, in summary, in the case of a hose pipe, Newton's third law of motion applies to the forces involved in the flow of water through the hose. The force that the water exerts on the hose is equal and opposite to the force that the hose exerts on the water, and this allows the water to flow through the hose.

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The expression for the person's acceleration after they touch the ground in terms of g, h and d is a = 2gh / (2h/g + sqrt(2gh + 2gd).

An acceleration refers to the change in velocity with respect to time in terms of speed and direction. In the case given here, assuming no air resistance, the potential energy of the person at the top of the ledge is converted into kinetic energy just before they hit the ground.

Let's consider the motion of the person after they touch the ground. We assume that the person's acceleration is constant during the time they move a distance d. Let a be the acceleration of the person after they touch the ground, and let t be the time it takes for them to come to a complete stop. Then:

⇒ d = 1/2 × a t²........... (1)

⇒ v = at........(2)

⇒ h + d = 1/2 gt² + vt......... (3)

where, v is the velocity of the person just before they touch the ground, and g is the acceleration due to gravity.

Therefore,

t = (sqrt(2gh + 2gd + v²) – v) / g

a = 2(d + h) / t² – g

Substituting v = sqrt(2gh):

a = 2gh / (2h/g + sqrt(2gh + 2gd))

Therefore, the acceleration of the person after they touch the ground is:

a = 2gh / (2h/g + sqrt(2gh + 2gd))

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θ = 39.7º is the angle in degrees that the string makes with respect to the vertical using Newtons law.

In each exercise, we construct the equations at the equilibrium point using Newton's second law for the sphere. We'll assume that plate 1 is on the left for this exercise.

Y Axis

    Y= -W = 0 = W

X axis

       X= - F_{e2} + Tₓ = 0

Let's utilize trigonometry to determine the tension's component parts. We gauge the angle in relation to the vertical

        sin θ = Tₓ / T

        cos θ = T_{y} / t

        Tₓ = T sin θ

        T_{y} = T cos θ

Gauss's law can be used to determine the electric field of each leaf. Since a cylinder forms a Gaussian surface, the component of the field perpendicular to the cylinder's base is the one containing electric flow.

 F = ∫ E. dA

The flow is towards both sides of the plate in this instance, and the scalar product is reduced to the algebraic product.

F = 2E A = q_{int} / ε₀

let's use the concept of surface charge density

       σ = q_{int} / A

we substitute

       2E A = σ A /ε₀

         E = σ / 2ε₀

    T cos θ = mg

         - q σ₁ / 2ε₀  - q σ₂ /2ε₀  + T sinθ = 0

we introduce t in the second equations

         - q /2 ε₀  (σ₁ + σ₂) + (mg / cos θ) sin θ = 0

         mg tan θ = q /2ε₀   (σ₁ + σ₂)

         θ = tan -1 (q / 2ε₀ mg (σ₁ + σ₂)

data indicates the mass of 0.26 g = 0.26 10⁻³ kg

give the charge density on plate 2, suppose ab = 10 10⁻⁶ C / m²

let's calculate

        θ = tan⁻¹ (9.0 10⁻¹⁰ (30 + 10) 10⁻⁶ / (2  (6.25 10⁻¹² *0.26 10⁻³ 9.8))

        θ = tan⁻¹ 8.3 10⁻¹)

        θ = 39.7º

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The given vectors E and F are in Cartesian form. To find their magnitudes, we can use the formula:

|v| = √(vx² + vy²)

where vx and vy are the x and y components of the vector.

Cartesian algebra, also known as coordinate algebra or analytic geometry, is a branch of mathematics that deals with the use of algebraic equations to describe geometric shapes and their properties. It is named after the French philosopher and mathematician René Descartes, who developed the Cartesian coordinate system, which provides a way to describe the position of points in space using numbers.

A. Magnitude of E:

|E| = √((3i)² + (1j)²)

= √(9i² + 1j²)

= √(9 + 1)

= √(10)

Therefore, the magnitude of E is √(10).

B. Magnitude of F:

|F| = √((1i)² + (-3j)²)

= √(1 + 9)

=√(10)

Therefore, the magnitude of F is √(10).

C. Magnitude of G = E + F:

G = E + F = (3i + 1i) + (1j - 3j)

= 4i - 2j

|G| = √((4i)² + (-2j)²)

=√(16 + 4)

= √(20)

= 2√(5)

Therefore, the magnitude of G is 2√(5).

D. Magnitude of H = -E - 2F:

H = -E - 2F = (-3i - 2i) + (-1j + 6j)

= -5i + 5j

|H| = √(-5i)² + (5j)²)

= √(25 + 25)

= √(50)

= 5√(2)

Therefore, the magnitude of H is 5√(2).

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The correct answers to the blanks are 1. UP ,2. UP and 3. ZERO

When the cart is initially given a push up the ramp, the direction of the acceleration of the cart is up the ramp. This is because the net force acting on the cart is directed up the ramp, in the same direction as the component of the gravitational force that is parallel to the ramp. As a result, the cart accelerates up the ramp in the same direction as the net force.

When the cart turns around and begins moving down the ramp, the direction of the acceleration of the cart is still up the ramp. This is because the component of the gravitational force that is parallel to the ramp is still directed down the ramp, but the net force acting on the cart is directed up the ramp due to the normal force exerted by the ramp on the cart. As a result, the cart accelerates down the ramp in the opposite direction to the net force, which is up the ramp.

            At the highest point that the cart reaches on the ramp, when the cart momentarily comes to rest, the magnitude of the acceleration of the cart is zero. This is because at this point, the cart is at the highest point on the ramp and has stopped moving. As a result, the velocity of the cart is zero, and therefore the acceleration of the cart is also zero.

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[tex]19.7cm/s and 4.70 cm/s^2[/tex]  are the average speed and acceleration of the glider.

(a) As the glider's front end crosses point A, start a timer at t=0. The instantaneous speed at t=0.314s, halfway through the time interval, is [tex]12.4cm/(0.628s)=19.7cm/s[/tex], which equals the glider's average speed for the interval between t=0 and t=0.628s.

(b) The instantaneous speed at the point [tex]t=(2.02+2.45)/2=2.23s[/tex]. is equal to [tex]12.4cm/(0.431s)=28.8cm/s[/tex], which is the average speed of the glider for the time span between [tex]0.628+1.39=2.02s[/tex] and [tex]0.628+1.39+0.431=2.45s[/tex].

Now that we are aware of the velocities at two points, we can calculate the acceleration using the formula [tex][(28.8-19.7)cm/s]/[(2.23-0.314)s]=4.70cm/s2[/tex].

(c) The average velocity over a predetermined period of time is determined using the glider's length rather than the distance between points A and B.

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Answer:

The forces acting on an asteroid include gravity from the Sun and other celestial bodies, radiation pressure from the Sun, and the pressure from interplanetary gas and dust. The gravitational forces will act to pull the asteroid towards the Sun, while the radiation pressure and interplanetary gas and dust will act to push it away. The net force acting on the asteroid will determine its path and velocity through the solar system.

Explanation:

The Lower frequency & longer wavelength is the correct option (a).

What is frequency ?

The frequency is expressed in Hertz. A sound wave's frequency is determined by how many vibrations it produces ( f ). Another way to think of frequency is as the quantity of waves that pass a specific spot in a second.

What is wavelength ?

The distance between identical points (adjacent crests) in adjacent cycles determines how far a waveform signal has travelled in space or over a wire. In wireless systems, this length is often expressed in metres (m), centimetres (cm), or millimetres (mm).

Therefore, The Lower frequency & longer wavelength is the correct option (a).

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The net resistance of 113 strands placed side by side is 1/113th of the resistance of a single strand.

Assuming that each strand has the same resistance, the net resistance of 113 strands placed side by side can be found by calculating the equivalent resistance of a parallel combination of 113 resistors. The formula for calculating the equivalent resistance of a parallel combination of resistors is:

1/R = 1/R1 + 1/R2 + ... + 1/Rn

where R is the equivalent resistance, and R1, R2, ..., Rn are the resistances of the individual components.

In this case, we have 113 strands, so n = 113. Since the strands are placed side by side, they are in parallel, so we can use the above formula to find the equivalent resistance:

1/R = 1/R1 + 1/R2 + ... + 1/R113

R = 1 / (1/R1 + 1/R2 + ... + 1/R113)

Since we don't know the resistance of a single strand, we cannot calculate the exact value of the net resistance. However, if we assume that each strand has the same resistance, we can use the formula for the equivalent resistance of n equal resistors in parallel:

1/R = n / R1

R = R1 / n

Substituting n = 113, we get:

R = R1 / 113

This means that the net resistance of 113 strands placed side by side is 1/113th of the resistance of a single strand.Assuming that each strand has the same resistance, the net resistance of 113 strands placed side by side can be found by calculating the equivalent resistance of a parallel combination of 113 resistors. The formula for calculating the equivalent resistance of a parallel combination of resistors is:

1/R = 1/R1 + 1/R2 + ... + 1/Rn

where R is the equivalent resistance, and R1, R2, ..., Rn are the resistances of the individual components.

In this case, we have 113 strands, so n = 113. Since the strands are placed side by side, they are in parallel, so we can use the above formula to find the equivalent resistance:

1/R = 1/R1 + 1/R2 + ... + 1/R1₁₃

R = 1 / (1/R₁ + 1/R₂ + ... + 1/R1₁₃)

Since we don't know the resistance of a single strand, we cannot calculate the exact value of the net resistance. However, if we assume that each strand has the same resistance, we can use the formula for the equivalent resistance of n equal resistors in parallel:

1/R = n / R₁

R = R1 / n

Substituting n = 113, we get:

R = R₁ / 113

This means that the net resistance of 113 strands placed side by side is 1/113th of the resistance of a single strand.

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Answer:

Explanation:

Displacement, velocity, and acceleration are fundamental concepts in physics that describe the motion of objects.

Velocity is a vector quantity that describes the rate of change of an object's position in a particular direction. It is defined as the displacement (the change in position) divided by the time it took to cover that displacement.

Acceleration is the rate of change of velocity, or the rate at which an object changes its speed or direction of motion. It is a vector quantity that is defined as the change in velocity divided by the time it took to achieve that change.

The change in velocity, also known as the delta velocity, is the difference between the initial velocity (v₁) and the final velocity (v₂). In this case, the change in velocity can be calculated as follows:

Δv = v₂ - v₁ = 1.2 mm/s - 1.0 mm/s = 0.2 mm/s

So, the turtle's velocity changes by 0.2 mm/s from 1.0 mm/s to 1.2 mm/s at 0=20°.

In summary, velocity describes the rate of change of an object's position, acceleration describes the rate of change of velocity, and the change in velocity is the difference between the final and initial velocities.

In Figure 1, charge 2 should be placed along line D to make the free-body diagrams of charge 1 and charge 2 consistent.

The electric field lines produced by charge 2 should point towards charge 1 to provide the attractive force between them. As shown in the free-body diagram of charge 1, the electric field lines point towards the left, which means that charge 2 should be placed on the left side of charge 1. Similarly, in Figure 2, charge 2 should be placed along line F to make the free-body diagrams of charge 1 and charge 2 consistent. The electric field lines produced by charge 2 should point towards the left to provide the attractive force between them. In Figure 1, charge 2 should be placed along line D to make the free-body diagrams of charge 1 and charge 2 consistent.

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Newton's law of motion

Three newton's law of motion:-

1. An object will not change its motion unless a force acts on it.

2. The force of an object is equal to its mass time its acceleration.

3. When two objects interact , they apply forces to each other of equal magnitude and opposite direction.

Newton's law of motion are three basic laws of classical mechanics that describes the relationship between the motion of an object and the forces acting on it.

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Answer:

The Force of Friction:

Friction is a self-adjusting force. The block in the question is moving with constant velocity under the force of 5 N. This implies that the force of kinetic friction acting on the block is also 5 N, acting opposite to the applied force and net force on the block is

Avogadro's number, which is equal to [tex]6.02214076 \times 10^23[/tex] Is the quantity of units in one mole of any material (defined as its molecular weight in grams).

Avogadro made the right assumption that equivalent quantities of gases at the same pressure and temperature contain an equal number of molecules. Avogadro proposed a theory in 1811 that his contemporaries disregarded for many years.

In order to determine how many particles there are in a cubic centimetre of gas under ideal conditions, Loschmidt employed the kinetic molecular theory in 1865. The acknowledged value of this quantity—now known as the Loschmidt constant is [tex]2.6867773 \times 10^25 m-3.[/tex]

Therefore, equal volumes of gases at the same temperature and pressure should contain equal numbers of molecules, as Avogadro rightly theorized. It is [tex]6.02214076 \times 10^23[/tex] Or Avogadro's number.

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Answer: D

Explanation:An inelastic collision is one in which objects stick together after impact, and kinetic energy is not conserved. This lack of conservation means that the forces between colliding objects may convert kinetic energy to other forms of energy, such as potential energy or thermal energy.

These come closest to the mass of Jupiter as (a) 0.000951; (b) 0.000955.

Kepler's laws describe the motion of planets in their orbits around the sun.

This question involves using Newton's version of Kepler's Third Law to calculate the mass of Jupiter. Kepler's Third Law states that the square of the period of revolution of a planet/moon around a central object is proportional to the cube of the semimajor axis of the orbit. Newton's version of the law introduces the masses of the two objects in the equation, allowing us to solve for the mass of the central object (in this case, Jupiter) if we know the period and semimajor axis of a moon's orbit around it.

For part (a), we are given the period and semimajor axis of Ganymede's orbit and asked to select the closest answer for the mass of Jupiter when using this data. By plugging the values into Newton's version of Kepler's Third Law and solving for Jupiter's mass, we get an answer of 0.000951 solar masses.

For part (b), we are given the period and semimajor axis of Europa's orbit and asked to select the closest answer for the mass of Jupiter when using this data. Again, by plugging the values into the equation and solving for Jupiter's mass, we get an answer of 0.000989 solar masses.

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Answer:

Explanation:To find the change in kinetic energy, we subtract the initial energy from the final energy. This answer in positive because the car gains energy when it increases its velocity.

The energy of the flower pot is potential energy. The potential energy of the flower pot when it weighs 3 N in a height of 300 m is 900 J.

Potential energy of an object is the energy generated by virtue of its position whereas, kinetic energy is the energy generated by virtue of its motion.

Potential energy = mass x gravity x height

Given the weight of the flower pot is 3N. That is the force by gravity. Then displacement = 300 m.

Thus, P = 3 m × 300 m = 900 J.

If the flower pot is placed at a height of 10 m, the potential energy reduces as follows:

Potential energy = 3 x 10 m = 30 J.

Remaining energy is converted to the kinetic energy

ie. 900 J - 30 J = 870 J

Therefore, 870 J is transformed to kinetic energy.

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Your question is incomplete. But your complete question probably was:

A flower pot weighing 3 newtons is sitting on a windowsill 300 meters from the ground is the energy of the flower pot potential of kinetic? How many joules is this?

When the flower pot in problem 3 is only 10 meters from the ground, what is its potential energy?

How much of the total energy in problems 3 and 4 has been transformed to kinetic energy?

Answer:

The potential difference across the battery can be calculated using the equation:

Potential difference (V) = Energy supplied (J) / Charge (C)

Energy supplied during each second = 2.3 coulombs * 4.2 J/C = 9.66 J

Therefore, the potential difference across the battery would be:

Potential difference (V) = 9.66 J / 2.3 C = 4.2 V

So the potential difference across the battery is 4.2 volts.

The perception that seems infertile couples who adopt a child are generally more likely to conceive a progeny themselves best describes an illusory correlation.

Illusory correlation when we overexcite to one outcome and ignore the other. In psychology, it states that the relationship between the variables, even such a relation does not exist.

In the given passage couples who adopt a child are subsequently more likely to conceive a child themselves best explains, suggesting the illusory correlation.

Therefore, this passage suggests an illusory correlation.

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(a) The particle is instantaneously at rest at time, t = 3/2 seconds.

(b)  The displacement of the particle is 54 meters from the fixed point O at t = 6 seconds.

(c) The total distance travelled by the particle during the first 6 seconds of its motion is 52 meters.

To find the time when the particle is instantaneously at rest, we need to find the time when its velocity is zero. The velocity of the particle can be found by taking the derivative of its displacement with respect to time, which gives us the velocity function, v(t) = d(x)/dt.

Taking the derivative of x = (t — 1)^3 -2t^2 +1 with respect to time t, we get:

v(t) = 3(t - 1)^2 - 4t

To find when the velocity is zero, we set v(t) = 0 and solve for t:

0 = 3(t - 1)^2 - 4t

3(t - 1)^2 = 4t

t = (3(t - 1)^2)/4

t = (3(t - 1)^2)/4

Solving this equation, we find t = 3/2 seconds. So, the particle is instantaneously at rest at t = 3/2 seconds.

To find the displacement of the particle from O when t=6 s, we simply substitute t = 6 into the displacement function:

x = (6 - 1)^3 - 2 * 6^2 + 1

x = 125 - 72 + 1

x = 54 meters

To find the total distance travelled during the first 6 seconds of its motion, we need to find the definite integral of the velocity function over the interval [0, 6].

x(t) = ∫v(t) dt

x(t) = ∫(3(t - 1)^2 - 4t) dt

x(t) = (t - 1)^3 - 2t^2 + C

where C is the constant of integration. We can determine the value of C by using the initial condition that x(0) = 0:

0 = 0 - 2 * 0^2 + C

C = 0

So, x(t) = (t - 1)^3 - 2t^2.

Finally, to find the total distance travelled during the first 6 seconds of its motion, we evaluate the definite integral of x(t) from 0 to 6:

d = x(6) - x(0)

d = [(6 - 1)^3 - 2 * 6^2] - [(0 - 1)^3 - 2 * 0^2]

d = 125 - 72 - 1

d = 52 meters

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The  speed of the car after 20 seconds are  20 m/s.

The speed of an object is a measure of how quickly the object is moving in a particular direction. It is typically measured in units such as meters per second (m/s). Speed is a scalar quantity, which means it is only concerned with the magnitude of the velocity (or speed) and not the direction

The graph shows that the speed of the car was 20 m/s after 20 seconds.

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Answer:

d. a is correct but b is wrong.

Explanation:

A car that is moving at a constant speed of 10m/s is experiencing a net force of zero, meaning that the sum of all forces acting on the car is equal to zero. This means that the forward force applied by the engine is equal in magnitude but opposite in direction to the force of friction acting on the car.

The force of friction acts to slow down the car, but it does not equal the forward force applied by the engine. Instead, it is determined by factors such as the weight of the car, the road surface, and the tire traction. If the forward force applied by the engine is greater than the force of friction, the car will accelerate. Conversely, if the force of friction is greater than the forward force applied by the engine, the car will decelerate.

If the car continues to decelerate at this rate then the total distance of car is 324.91 meters.

When an object slows down, it undergoes deceleration, which is the opposite of acceleration. There are usually two ways that acceleration slows down. The first occurs when an object slows down by itself. Gravity, friction, or momentum loss could be to blame. The second is when the object is subjected to an external force, such as when a car driver applies the brakes or a pilot deploys the air brakes in an airplane. A journey that is both safe and successful requires deceleration, which is an essential component of movement.

                       d₁ = R × θ

                        = 0.42×73×2× π

                               = 192.6 m

Using 2nd kinematic equation for distance traveled in next 16 sec:

                              θ₁ = wi × t + (1/2)× α ×t²

             θ₁ = 39.69 × 16 + (1/2) × (-2.5) × 16²

                                 = 315.04 rad

                 d₂ = R× θ₁

                        = 0.42× 315.04

                               = 132.31 m

So total stopping distance = 192.6 + 132.31

                                            = 324.91 m

Therefore, the total distance is 324.91 m.

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Answer:

False

Explanation:

I'm pretty sure increasing the time of impact actually decreases the force because it is being spread out.

The forward force is  10200 N.

The term "forward force" is not commonly used as a specific term, but it could refer to any force that acts in the direction of motion of an object. For example, the force generated by a car's engine that propels it forward is commonly referred to as the "driving force," which could be considered a type of forward force.

We have to note that the Fnet = ma

= 1000 * 10 = 10000 N

Thus;

Fnet = Force  force - Resistance force

Forward force = Fnet + Resistance force

= 10000 + 200

= 10200 N

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The amount of forward force from the engine needed to make the 1000 Kg car accelerate 10 m/s² forward is 10200 N

First, we shall obtain the net force acting on the 1000 Kg car. Details below:

Net force = mass × acceleration

Net force = 1000 × 10

Net force = 10000 N

Finally, we shall obtain the forward force needed to accelerate the car. This is illustrated below:

Net force = Forward force - resistant force

10000 = Forward force - 200

Collect like terma

Forward force = 10000 + 200

Forward force = 10200 N

Thus, the forward force needed is 10200 N

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