Motion in straight line questions | form two Physics

Define the term velocity

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UNSOLVED

An object travelling at 8 m/s accelerates at 2 m/s² for 6 seconds. Calculate its final velocity.

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UNSOLVED

An object starts from rest and moves with a velocity of 20 m/s for ? seconds. It maintains this speed for 20 seconds before applying brakes and comes to rest after 10 seconds.

(a) Sketch the velocity-time graph for this motion.
(b) From the graph drawn in part (a) above, find:
(i) Acceleration
(ii) Deceleration
(c) Calculate the total distance covered for the whole motion.

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UNSOLVED

(i) State the law of conservation of linear momentum.
(ii) Define the term “elastic collision”.

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UNSOLVED

A body of mass 8 kg moving with a velocity of 20 m/s collides with another body of mass 4 kg moving with a velocity of 10 m/s in the same direction. The velocity of the 8 kg body is reduced to 15 m/s after the collision. If the bodies do not stick together after the collision, calculate the final velocity of the 4 kg body.

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UNSOLVED