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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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Important Questions on Equations of Motion

MEDIUM

A body starts from rest is accelerated uniformly for 30s. If x1, x2, x3 are the distances travelled in first 10s; next 10s and last 10s respectively, then x1 : x2 : x3 is

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In the above graph what is the value of acceleration? 

MEDIUM
A car accelerates uniformly from 18 km/h to 36 kmh in 5 sec. Calculate the acceleration.
MEDIUM
A train starting from rest attains velocity of 72 km h-1 in 5 min, then find the acceleration.
(Assuming that the acceleration is uniform)
EASY
Can a body have acceleration even at rest? If yes, give an example.
MEDIUM

Varun is riding his motorcycle with a certain speed. He sees a child in the middle of the road moving all alone. Varun immediately applies brakes of his motorcycle and saves the child. Draw a velocity-time graph of the motorcycle.

MEDIUM
A stone is thrown in a vertically upward direction with a velocity of 5 m/s. If the acceleration of the stone during its motion is 10 m/s2 in the downward direction, what will be the height attained by the stone and how much time will it take to reach there?
EASY
A trolley, while going down an inclined plane, has an acceleration of 2 cm s-2. What will be its velocity 3 s after the start?
MEDIUM
Starting from rest, Nikita paddles her bicycle to attain a velocity of 5 m/s in 25 s. Then she applies brakes so that the velocity of the bicycle comes down to 4 m/s in the next 5 s. Calculate the acceleration of the bicycle in both cases.
MEDIUM
Distinguish between the following: Velocity and acceleration.
EASY
Can a body have zero velocity and still be accelerating? Give reasons.
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Rohan and Abdul are friends. They are playing with a ball in the garden. Rohan throws the ball in the air to be caught by Abdul. Abdul after catching the ball does the same. Does the velocity of the ball increase or decrease when it is thrown vertically upwards?

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A body has an acceleration of -10 m/s2. What is its retardation?
MEDIUM
A bus starting from rest moves with a uniform acceleration of 0.1 m/s2 for 2 minutes. Find the distance travelled.
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A scooter acquires a velocity of 54 km/h in 15 s just after the start. Calculate the acceleration of the scooter.
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Name the physical quantity which causes acceleration to be non-uniform.

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Under what condition(s) acceleration is zero for a moving body?
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When acceleration is constant, can the direction of velocity of a body change? If yes, how?

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State if the following situation is possible and give an example for it.

A body with acceleration but with zero velocity.

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Is it possible to stop a fast-moving automobile instantaneously?