A cylindrical rod has equal and opposite forces applied perpendicular to its circular ends. The forces are directed toward the rod, compressing the rod. What type of stress is this rod subject to?
the rod is subjected to tensile stress. In such cases, the volume of the rod remains constant, however there's an increment in the length.
Tensile stress makes material elongate along the axis of the applied load.
In this case, the rod elongates along its axis yet the volume remains constant.
Who exerts more pressure when standing on the floor? (show work) A woman in high heels: weight 620 N, area of one shoe 35 cm2 A man: weight 890 N, area of one shoe 0.0080 m2
The woman in high heels with a weight of 620 N and an area of one shoe of 35 cm² exerts more pressure when standing on the floor
P = F / A
P = Pressure
F = Force
A = Area
For the woman,
F = 620 N
A = 2 * 35 cm²
A = 35 * [tex]10^{-4}[/tex] m²
P = 620 / 2 * 34 * [tex]10^{-4}[/tex]
P = 91.18 KPa
For the man,
F = 890 N
A = 2 * 0.008 m²
P = 890 / 2 * 0.008
P = 55.63 KPa
P of woman > P of man
Therefore, the woman in high heels exerts more pressure when standing on the floor
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What events take place within the mitochondrial membrane?.
On the inner mitochondrial membrane, an excessive energy electron is surpassed alongside an electron transport chain. The electricity launched pumps hydrogen out of the matrix area. The gradient created through this drives hydrogen returned thru the membrane, via ATP synthase.
The inner mitochondrial membrane transduces power via oxidative phosphorylation, the primary procedure liable for the production of power in the form of ATP in eukaryotic cells (Saraste, 1999).
Mitochondria, using oxygen to be had inside the cell convert chemical strength from food within the cellular to power in a shape usable to the host mobile. The procedure is known as oxidative phosphorylation and it happens in internal mitochondria.
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Which sentence can represent the inequality startfraction n over 4. 2 endfraction less-than-or-equal-to 21? the quotient of a number and 4. 2 is less than or equal to 21. The quotient of a number and 4. 2 is less than 21. The quotient of 4. 2 and a number is less than or equal to 21. The quotient of 4. 2 and a number is less than 21.
The sentence can constitute the inequality in the quotient of more than a few and four.2 is less than or identical to 21.
A quotient is a quantity produced by the division of numbers. The quotient has extensive use throughout mathematics and is generally called the integer part of a department, or as a fraction or a ratio.
The range we reap when we divide one quantity via some other is the quotient. as instance, in 8 ÷ 4 = 2; here, the end result of the department is 2, so it's miles the quotient. eight is the dividend and 4 is the divisor.
The quotient of department trouble is determined with the aid of dividing the dividend through the divisor. this can be accomplished thru repeated subtraction or long division. it's far possible to find the quotient of two integers, fractions, or two algebraic terms.
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The measure of dispersion which is not measured in the same units as the original data is the.
Variance is not expressed in the same units as the original data.
The variance of a random variable from its population mean or sample mean is expected in probability theory and statistics. The term "variance" refers to a measurement of how widely apart a group of numbers are from one another. In statistics, variance plays a key role. Descriptive statistics, statistical inference, hypothesis testing, goodness of fit, and Monte Carlo sampling are just a few notions that make use of variance. In the sciences, where data statistical analysis is frequently used, variance is a crucial instrument. The variance, which also refers to the second central moment of a distribution and the covariance between the random variable and itself, is defined as the square of the standard deviation.
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To outside observers at rest, the overall sizes of objects traveling at relativistic speeds are.
To outside observers at rest, the overall sizes of objects traveling at relativistic speeds are smaller.
The mathematical sign for light speed, "c," or relativistic speed, is approximately 186,282 miles per second. As a result, relativistic speed refers to the rate at which such effects are crucial for obtaining the proper level of measurement accuracy for the event under consideration. the discrepancies between values computed using relativity-based theories.
sizes of objects, in general, refers to a thing's size or magnitude. More specifically, the terms "geometrical size" or "spatial size" can be used to describe area, volume, or linear dimensions. Mass can also be used to estimate size, particularly when a range of densities is assumed. A file's actual space on a disc is represented by its sizes of objects. A file's logical and physical dimensions can match.
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What happens when a boulder has a mass of 4812 kg when it smashes into the ground
Given that the boulder's pe value is 4037.6, the energy it possesses immediately before impact must be equal to the energy it had at the time it began. In this manner, the bolder's potential energy
Kinetic energy: a definition and some instancesWhen a particle, object, or collection of particles move, kinetic energy, the energy of motion, is demonstrated. Kinetic energy is the energy that is released when a moving object moves, such as when a person walks, a ball is thrown, food falls off a table, or a particle is charged by an electric field.
Kinetic energy is produced by what?Potential energy that has been set into motion by factors like elastic forces or gravity can then be converted into kinetic energy. The power behind motion is called kinetic energy. An object's kinetic energy increases as force is applied to it, which causes it to move faster.
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At a certain depth in the ocean, the absolute pressure is p. If you go to twice that depth (treating the water as incompressible).
At a certain depth in the ocean, the absolute pressure is p. If you go to twice that depth the absolute pressure will be less than 2p.
Theory:-Talking about pressure when describing gases, liquids, and fluids; stress is used to describe solids. When a fluid is at rest, all directions experience the same pressure at a specific point.Absolute pressure, which is measured in relation to absolute vacuum, is the actual pressure present at a specific location.Gauge pressure is equal to atmospheric pressure minus absolute pressure.Principle :- Absolute pressure is the term used to describe the actual pressure at a specific location. It is measured in relation to absolute vacuum (i.e. e. absolute zero pressure). However, the majority of pressure-measuring instruments are calibrated to read zero in the atmosphere, and as a result, they display the discrepancy between the absolute pressure and the local atmospheric pressure. The gage pressure is the name given to this variation. Vacuum gages, which show the difference between the atmospheric pressure and the absolute pressure, are used to measure vacuum pressures, which are pressures below atmospheric pressure.To understand more about atmospheric pressure-
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A brick is resting on a rough inclined surface. The friction force acting on the brick, along the incline, is.
When a brick is at rest on the inclined plane,it means all forces are balanced on the brick.
so, Gravitational force (mg) will act in component along the iclined are mgsinQ in downwards and mgcosQ in perpendicular,
Therefore frictional force will work in opposit of mgsinQ
it means mg(sinQ) = frictioal force
on the other side we can find force balance perpendicular to the inclined plane as ;
Normal(N) = mg(cosQ)
To move the brick less frictional force is required or we need to increase the force.
so from above equation we can say that,Friction force is grater then the Gravitational force.
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a nonsinusoidal electromagnetic wave like that described in section 32.2 has uniform electric and magnetic fields. the magnitude of the poynting vector for this wave is 11.0 w/m2w/m2 . find the magnitude of the electric field. express your answer with the appropriate units. ee
The magnitude of the electric field of the electromagnetic wave is E = 64.4 V/m
What is an electromagnetic wave?An electromagnetic wave is awave that does not require a medium to propagate
What is an electric field?An electric field is a region in which the effect of an electric force is felt.
How to find the magnitude of the electric field?Since a nonsinusoidal electromagnetic wave like that described in section 32.2 has uniform electric and magnetic fields. the magnitude of the poynting vector for this wave is 11.0 W/m².
What is the poynting vector?The magnitude of the poynting vector is given by
S = E²/μ₀c where
E = electric field, μ₀ = permeability of free space = 4π × 10⁻⁷ H/m and c = speed of electromagnetic waves = 3 × 10⁸ m/sSince we require the electric field, making E subject of the formula, we have
E = √(Sμ₀c )
Given that S = 11.0 W/m²,
Substituting the value sof the variables into the equation, we have
E = √(Sμ₀c )
E = √(11.0 W/m² × 4π × 10⁻⁷ H/m × 3 × 10⁸ m/s)
E = √(44π × 3 × 10WH/s)
E = √(1320π WH/s)
E = √(4146.9 WH/s)
E = 64.4 V/m
So, the magnitude of the electric field is E = 64.4 V/m
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Which interaction between magnets demonstrates the greatest change in kinetic energy?
Answer:
two attracting magnets are released while moving away from one another.
Explanation:
Answer:the correct answer is: two attracting magnets are released from hole moving towards one another
Explanation:
two billiard balls of equal mass undergo a perfectly elastic head-on collision. if one ball's initial speed was 1.90 m/s , and the other's was 3.20 m/s in the opposite direction, what will be their velocities after the collision?
Answer:
One can use conservation of momentum and energy and obtain the result that the velocity of separation in such a collision will be equal to the velocity of approach
Thus, after collision their speeds will be 3.20 and 1.90 m/s
They will exchange velocities in the collision
If they were approaching each other their relative speeds are
5.10 m/s w.r.t. each other
If they were going in the same direction before the collision their relative speeds before and after the collision are 1.3 m/s
The problem here implies that their relative speed before the collision is 5.10 m/s (traveling in opposite directions)
what is the de broglie wavelength (in nanometers) of an electron with a velocity of 2.5 x 106 m/s? enter the numerical answer only; do not enter a unit.
The de Broglie wavelength (in nanometers) of an electron with a velocity of 2.5 x [tex]10^{6}[/tex] m / s is 0.29 nm
λ = h / m v
λ = Wavelength
h = Planck's constant
m = Mass
v = Velocity
v = 2.5 * [tex]10^{6}[/tex] m / s
m = 9.1 * [tex]10^{-31}[/tex] kg
h = 6.626 * [tex]10^{-34}[/tex] J s
λ = 6.626 * [tex]10^{-34}[/tex] / ( 9.1 * [tex]10^{-31}[/tex] * 2.5 * [tex]10^{6}[/tex] )
λ = 0.29 * [tex]10^{-9}[/tex] m
λ = 0.29 nm
De Broglie's equations describes that matter can act as waves just as light and radiation do. It also states that beam of electrons can also be diffracted like a beam of light
Therefore, the wavelength of the electron is 0.29 nm
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The graph represents the reaction 2H₂ + O₂ 2H₂O as it reaches
equilibrium. Based on the graph, which two statements about this reaction
are true?
Concentration (mol/L)
1
2
Time (s)
3
4
- H₂O
H
The following are true :
C. At point 2 the concentrations of H20...O2... & H2 are all changing toward their equilibrium concentrations
D. At point 1 more reactants are converted to products than products are converted to reaction.
What is equilibrium ?A state in which opposing forces or actions are balanced so that one is neither stronger nor greater than the other. Demand and supply were in balance chemical balance. An object is in equilibrium when all the forces acting on it are balanced. These forces are considered balanced if the rightward force balances the leftward force and the upward force balances the downward force. Examples of balance are: A book quietly placed on the table. A car that travels at a fixed speed. A reaction in which the forward and reverse reaction rates are equal.To learn more about equilibrium from the given link :
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If you wanted to search for faint rings around a giant planet by sending a spacecraft on a flyby, it would be best to make your observations.
Answer:
After the spacecraft has passed the planet
Explanation:
Astronomy Test 6
Why are two permanent magnets attracted to each other?.
The reason why two permanent magnets attract is that they have opposite pole.
What is a magnet?We know that a magnet has to do with an object that has its magnetic domains properly aligned in such a way that it can be able to attract other objects. We have to see here that a permanent magnet could have a north pole and a south pole.
Given that magnets that have different poles are going to attract because of the alignment of the magnetic domains in the both magnets, we can say that it is possible for two permanent magnets to attract.
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Stars like the sun emit energy from nuclear fusion which combines small nuclei of hydrogen into larger nuclei of helium. All matter in the universe is created from stars. Which of these creates heavier elements like copper and zinc?.
The explosions (supernovae) of first-generation stars creates heavier elements like copper and zinc.
What were first-generation stars?First-generation stars were stars that were formed shortly after the Big Bang. They consisted of primarily hydrogen and helium. Second-generation stars like the Sun contain some heavier elements. The elements couldn't exist just based on nuclear fusion inside stars. Instead, some of the elements must have come from the supernovae of first-generation stars.
The only way heavier elements like oxygen, carbon, and iron can form is by fusion of lighter elements in the cores of stars. Therefore, until the first stars began to form heavier elements, none of those elements existed in the universe.
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The acceleration of gravity on planet Y is 14.4 m/s/s. An object has a mass of 42.2 kg. What would be its weight on planet Y?
Weight
Help Links
N
Answer:
607.68N [weight on planet Y]
Explanation:
Using the formula
[tex]w = mg[/tex]
Where w is the weight, m is the mass and g is the gravity.
Gravity (g) on planet Y is 14.4 m/s/s
Object has a mass (m) of 42.2 kg
Weight (w) on planet Y is w
-
NOTE: '•' MEANS MULTIPLICATION
NOTE: WEIGHT IS MEASURED IN NEWTONS (N)
-
Inputing the values into the formula, and solving it...
w = mgw = 42.2 • 14.4w = 607.68== 607.68N [weight on planet Y]
What system acquisition method has the advantages of forcing staff to systematically go through every step in a structured process, enforcing quality by maintaining standards, and lowering the probability of missing important issues in collecting user requirements?.
Human resource planning (HRP) is the system acquisition method that has the advantages of forcing staff to systematically go through every step in a structured process, enforcing quality by maintaining standards, and lowering the probability of missing important issues in collecting user requirements.
HRP is the ongoing practice of strategically planning ahead to make the most use of an organization's most important asset—qualified workers. Planning for human resources helps prevent shortages or surpluses of labor while ensuring the optimal match between
Planning for human resources helps businesses ensure a consistent supply of qualified workers. For this reason, it is also known as workforce planning. Companies use the process to evaluate their needs and make future plans to meet those needs.
Planning for human resources must be adaptable enough to address short-term staffing issues as well as long-term changes in the corporate environment. HRP begins by evaluating and reviewing the current human resource capabilities.
The HRP process is divided into four broad steps: identifying the present employee supply, forecasting the workforce, balancing labor supply and demand, and creating plans that support the company's objectives.
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A metal sphere with a mass of 0.066 kg rolls along a friction-less surface at 4.4 m/s and strikes a stationary sphere having a mass of 0.019 kg. The first sphere stops completely. The spheres are in contact for 0.010 s before the second sphere is shot off down the track. What is the force applied to the second ball?
Work out and Use Units
The force applied to the second ball is 29.04 N.
What is the momentum of the metal sphere?
The final velocity of the second sphere is calculated as follows;
m₁u₁ + m₂u₂ = v(m₁ + m₂)
where;
m₁ is mass of the first m₂ is the mass of the second sphereu is the initial velocityv is the final velocity0.066(4.4) + 0.019(0) = v(0.066 + 0.019)
0.2904 = 0.085v
v = 0.2904/0.085
v = 3.42 m/s
The final momentum of the metal sphere is calculated as follows;
Pf = v(m₁ + m₂)
Pf = 3.42(0.066 + 0.019)
Pf = 0.2904 kgm/s
The force applied to the second ball is calculated as follows;
F = Pf/t
F = (0.2904) / (0.01)
F = 29.04 N
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espite the magnetic force, the electron continues to travel in a straight line at constant speed. you conclude that there must be another force acting on the electron. since you know there is also an electric field in this region, you decide that the other force must be an electric force. what is this electric force?
Despite of magnetic field, the electron moves with a constant speed and then:
Magnetic force is balanced by electric force
Fe = Fb = 2.88 * 10^-14 N
The corresponding electric field is
E = Fe / q
E = 2.88 * 10^-14 / 1.6* 10^-19
E = 1.8 * 10^5 N/C
This means that the magnetic field redirects the movement of charges. Therefore, particles can neither gain nor lose kinetic energy. Since the Lorentz force is always perpendicular to the direction, it acts as a centripetal force on velocity particles perpendicular to the direction of the magnetic field.
Lorentz force is the force exerted on a charged particle q moving with velocity v through an electric field E and a magnetic field B. Since the magnetic force acts perpendicular to the direction of motion, the work of the magnetic force on each moving charged particle is zero. Therefore speed will remain the same. Magnetic force is always perpendicular to the magnetic field. Reason Electric force is along the direction of the electric field.
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what is the magnitude of the acceleration of a speck of clay on the edge of a potter's wheel turning at 45 rpm if the wheel's diameter is 35 cm?
The centripetal acceleration of a speck of clay on the edge is 3.89 m/s².
We need to know about centripetal acceleration to solve this problem. The centripetal acceleration depends on the angular velocity and the radius. It can be written as
a = ώ² . R
where a is centripetal acceleration, ώ is angular velocity and R is radius.
From the question above, the given parameters are
ώ = 45 rpm
d = 35 cm
R = 35/2 = 17.5 cm = 0.175 m
Convert the angular velocity unit to rad/s
ώ = 45 rpm
ώ = 45 x 2π / 60 rad/s
ώ = 1.5π rad/s
By substituting the given parameters, we can calculate the centripetal acceleration
a = ώ² . R
a = 1.5π² . 0.175
a = 3.89 m/s²
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In the coordinate plane, line p has slope 1 3 and y-intercept (0, 2). Line r is the result of dilating line p by a factor of 3 centered at the origin. What are the slope and y-intercept of line r?.
The line r has slope 8 and coordinate (0.8).
What is line?
a line is an infinitely long to the object with no width, depth, or curvature. Thus, the lines are the one of one-dimensional objects, though they may exist on it two, three, or higher of the dimension spaces. The word line may also refer to a line are the segment in everyday life, which has two points to denote its ends.
Sol-As per the given question The line r has slope 8 and coordinate (0.8).
The slope of the line r will not change.
And intercept is the addition of their ordinate will be.
Intercept = 5+3
Intercept = 8
So, the line r has slope 8 and coordinate (0.8).
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describes when forces along the body are transmitted to an adjacent structure, usually the floor or a piece of equipment.
when forces along the body are transmitted to an adjacent structure, usually the floor or a piece of equipment is called Closed Kinetic chain .
A closed kinetic chain exercise, according to Steindler, occurs when the distal section encounters "substantial" external resistance that prevents unrestricted movement. As a result, neither the proximal nor the distal portions can move in this system.
Unfortunately, Steindler did not provide a numerical value for the word "substantial" in his original definition, which causes misunderstanding and disagreement over what constitutes a true closed kinetic chain movement. Except during isometric exercises, where there is no movement, true closed kinetic chain movement patterns never happen in the extremities.
However, in clinical practise, "resistance is imposed through the distal portion of the extremity and remains fixed to the extremities" is the definition of a closed kinetic chain. The standing squat is the best illustration of this since the feet stay firmly planted and the surface encounters significant resistance from the athlete's bodyweight or additional weight.
Due to its built-in functional stimulation, closed kinetic chain exercises have been used more and more in rehabilitation programmes for more than 20 years.
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A cyclist is traveling uphill, then downhill. At first, he travels uphill 1.0 km with a speed of 5 m/s. Then, he travels down that same hill at a speed of 15 m/s. What was his average speed?
I do the work on paper with steps and attached it to the answer!
White dwarf supernovae are good standard candles for distance measurements because.
White-dwarf supernovae occur only among young and extremely bright stars.
Two stars in a binary system revolve around the same location. A carbon-oxygen white dwarf, one of the stars, takes materials from its neighbouring star. The white dwarf eventually becomes overburdened with matter. A supernova is produced when a star explodes due to an excess of stuff.
According to a recent study, the supernova explosion of a white dwarf star could have effects similar to those of a nuclear bomb on Earth. White dwarfs are the dull, fading cores of dead stars, about the size of Earth, that remain after stars of average size have used up their fuel and lost their outer layers.
An eruption from the surface of a white-dwarf star in a binary star system is known as a nova. When a white dwarf, which is the dense core of a former normal star, "steals" gas from a neighbouring companion star, a nova is the result. When the white dwarf's surface accumulates enough gas, an explosion results.
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A box has 3 forces acting on it. A 1.05N force north, another 9.54N force to the north, and a 33.96N force to the south. What is the net force on the box?
The net force acting on the box is [tex]23.37N[/tex]
What is Force?
Force is defined as the product of mass and acceleration. It's SI unit is newton F=ma [tex]MLT^{-2}[/tex] is a dimensional formula of force.The push or pull on an object with mass ,change its velocity.Net Force = Difference between opposite direction forces.
Force acting on the box in north direction=[tex]1.05N+9.54N[/tex]
=[tex]10.59N[/tex]
Force acting on the box in south direction=[tex]33.96N[/tex]
Therefore,Net force=[tex]33.96N-10.59N[/tex]
=[tex]23.37 N[/tex].
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How do enzymes affect cells?.
Enzymes accelerate chemical reactions in cells.
Specifically lowering the threshold required to initiate the intended response. They do this by binding to another substance called a substrate. Enzymes are proteins that function as biological catalysts by accelerating chemical reactions. Molecules on which enzymes can act are called substrates, and enzymes convert substrates into various molecules known as products.
Enzymes are proteins that facilitate metabolism and chemical reactions in the body. Build some substances and break down others. All living things have enzymes. Our bodies naturally produce enzymes. Enzymes are proteins made up of amino acids linked together in one or more polypeptide chains. This arrangement of amino acids in the polypeptide chain is called the primary structure.
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let be the subspace of spanned by the vectors and . find the projection matrix that projects vectors in onto . .
If A is a matrix, its projection onto its column space is always represented by the matrix P=A(AA)1A. This simplifies to AA in the scenario where A is orthogonal.
What is deemed to be orthogonal?Orthogonal objects are connected by their perpendicularity to one another in Euclidean geometry. Lines of line segments that cross at a perpendicular angle are said to be connected orthogonally. Similar to this, two vectors are said to be orthogonal if they intersect at a 90-degree angle.
How does orthogonal behavior work?When two systems are orthogonal, they do not impact one another through interaction. At some point or junction, they come together, but other from that, neither system affects the other. Because of this independence, moving, testing, or changing things in one system does not affect components in the other system.
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If humans one day encountered aliens, what measurement system would we most likely share with them?
If humans one day encountered aliens, the measurement system we would most likely share with them is the speed of light since it's a universal measurement.
What is the speed of light?The speed of light in a vacuum, commonly denoted as c, is a universal physical constant that is important in many areas of physics. The speed of light c is exactly equal to 299,792,458 meters per second.
The speed of light is also known as the speed at which light waves propagate through different materials.
Since the speed of light is a universal measurement, humans would most likely share it with aliens if we one day encountered them.
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When considering gravity acceleration and the force of acceleration, what must be true? Question 14 options: A) The mass of the body must be the same as the acceleration of the body. B) The direction of the force and the direction of acceleration must be opposite of each other. C) The direction of the force and the direction of acceleration must be the same as each other. D) The direction of acceleration must be perpendicular to the direction of the force.
When considering gravity acceleration and the force of acceleration, Option C. The direction of the force and the direction of acceleration must be the same as each other.
Acceleration is the rate of change of the velocity of an item with appreciation to time. Accelerations are vector portions. The orientation of an item's acceleration is given by the orientation of the net pressure appearing on that object.
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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