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Question 3 An elevator platform is going...

Question 3 An elevator platform is going up at speed 20 ms and during its upward motion a small ball of 50 g mass falling in downward direction strikes the platform elastically at a speed 5 me! Find the speed (in ms) with which the ball rebounds. om 50 gm uj - 20 ml 1 un 5 ms!

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An elevator platform is going up at a speed 20 ms^(-1) and during its upward motion a small ball of 50 g mass falling in downward direction strikes the platform elastically at a speed 5 ms^(-1) . Find the speed (in ms^(-1) ) with which the ball rebounds.

An elevator platform is going up at a speed of 20 m//s and during its upward motion a small ball of 50 g mass, falling in downward direction, strikes the platform at speed 5 m//s . Find the speed with which the ball rebounds.

An elevator platform is going up at a speed of 20 m//s and during its upward motion a small ball of 50 g mass, falling in downward direction, strikes the platform at speed 5 m//s . Find the speed with which the ball rebounds.

A ball is projected for maximum range with speed 20 ms^-1 . A boy is located at a distance 25 m from point of throwing start run to catch the ball at the time when the ball was projected. Find the speed of the boy so that he can catch the ball (Take g = 10 ms^-1) .

A ball is projected for maximum range with speed 20 ms^-1 . A boy is located at a distance 25 m from point of throwing start run to catch the ball at the time when the ball was projected. Find the speed of the boy so that he can catch the ball (Take g = 10 ms^-1) .

When a ball of 0.5 kg mass moving with a speed of 20 ms^(-1) rebounds after striking normally a ferfectly elastic wall. Find the change in momentum.

Two billiard ball A and B each of mass 50g and moving in opposite direction with speed of 5ms^(-1) each, collide and rebound with the same speed. The impulse imparted to each ball is