# Motion (Practice Sheet, Class 9)

(1) Write the differences between uniform and non-uniform motion.

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(2) A car starts from the rest. It attains velocity of 10 m/s. It moves 10 s. Calculate its acceleration?

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(3)A boy covers 30 m in 2 s and come back to his starting position. Calculate distance covered and displacement by him.

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(4) An object moves from the rest with the acceleration of 10 m/s2. Calculate distance covered by it in 40 s.

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(5) The breaks applied to a car produces acceleration of 5 m/s2 in opposite direction to the motion. The car takes 2 seconds to stop after the application of breaks. Calculate the distance it travels during this time.

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(6) Calculate the distance covered by a car in velocity – time graph below- Solution –

(7) What is the uniform circular motion? Give few examples of it?

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(8) An object is moving with velocity of 100 m/s with the acceleration of 6 m/s2. It covers 50 m. What is the initial velocity?

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(9) Describe velocity – time graph given below –

(a) (b) Solution –

(10) An object starts from rest and attain velocity of 30 m/s in 30 second with acceleration of 1 m/s2. Then it moves 50 m in 2 second. Calculate total distance travelled by the object.

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Helping Topics

Motion

NCERT solutions, class 9 