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9th CBSE
IMPORTANT
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A particle falls from a height h on a fixed horizontal surface and rebounds. If e is the coefficient of restitution, then the total distance travelled by the particle before it stops rebounding is

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Important Questions on Motion

MEDIUM
9th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class IX>Chapter 7 - Motion>Exercise>Q 126
A body is gently dropped from the top of tower. Sensors are fixed in the wall of the tower at different distances. The distance recorded by the sensors in 2nd, 3rd and 4th second would be in the ratio of :
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9th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class IX>Chapter 7 - Motion>Exercise>Q 127
A stone is attached to a string 2 m long and whirled round in horizontal circle. It completes one rotation in one second. The angular velocity and linear speed of the stone is
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9th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class IX>Chapter 7 - Motion>Exercise>Q 128
A bus begin to move with an acceleration of 1m/s2. A man who is 48mbehind the bus starts running at 10m/s to catch the bus. The man will be able to catch the bus after
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9th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class IX>Chapter 7 - Motion>Exercise>Q 129

Assertion: Displacement of a body may be zero even when distance travelled by it is not zero.

Reason: The displacement is the shortest distance between initial and final position.

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9th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class IX>Chapter 7 - Motion>Exercise>Q 130
A particle moving towards east with 6 m/s experiences an acceleration of 2 m/s2 towards west, for 8 s. Find the distance covered by the particle in 10 s.
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9th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class IX>Chapter 7 - Motion>Exercise>Q 131
A juggler keeps 5 balls going with one hand, so that at any instant, 4 balls in air and one ball in the hand . If each ball rises to a height of 20 m, then the time for which each ball stays in the hand is g=10 ms-1
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9th CBSE
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Science Textbook of Competency Based Questions for Class IX>Chapter 7 - Motion>Exercise>Q 132

An athlete moves along a path PQRSTUVP, in 44 seconds as shown in the figure, then the average speed of the athlete is _____m s-1.

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9th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class IX>Chapter 7 - Motion>Exercise>Q 133
The area under velocity-time graph represents the