Acceleration ( a ) is the rate of change in velocity ( Δ v ) over the change in time ( Δ t ), a = Δ v Δ t . The acceleration is a vector quantity with a SI unit of m s - 2 .

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A body describes uniformly accelerated motion along a straight line. Which of the following displacement-time graphs shown represent the motion correctly?

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Important Questions on Measurements and Motion

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Science>Physics>Measurements and Motion>Rate of Change of Velocity

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In the above graph what is the value of acceleration?

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Science>Physics>Measurements and Motion>Rate of Change of Velocity

Which of these is not an example of non-uniform acceleration?

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Science>Physics>Measurements and Motion>Rate of Change of Velocity

Write the formula for acceleration. Give the meaning of each symbol which occurs in it.

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Science>Physics>Measurements and Motion>Rate of Change of Velocity

What do we mean by saying that the acceleration of a body is

3 m s^{- 2}

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Science>Physics>Measurements and Motion>Rate of Change of Velocity

A ball hits a wall horizontally at

6.0 m s^{- 1}

. It rebounds horizontally at

4.4 m s^{- 1}

. The ball is in contact with the wall for

0.040 s

. What is the acceleration of the ball?

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Science>Physics>Measurements and Motion>Rate of Change of Velocity

Two particles A and B having different masses are projected from a tower with same speed. A is project vertically upward and B vertically downward. On reaching the ground

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Science>Physics>Measurements and Motion>Rate of Change of Velocity

What term is used to denote the change of velocity with time?

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Science>Physics>Measurements and Motion>Rate of Change of Velocity

The formula for acceleration is?

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Science>Physics>Measurements and Motion>Rate of Change of Velocity

What do you understand by the term acceleration? When is acceleration positive and when is it negative? State the unit of acceleration in SI system.

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Science>Physics>Measurements and Motion>Rate of Change of Velocity

What do you mean by $5 m s^{- 2}$ ?