BITSAT2024PhysicsCenter of Mass, Momentum and CollisionActual

A ball falling freely from a height of 4.9 ~m / s , hits a horizontal surface. If e= 3 4 , then the ball will hit the surface, second time after

Options

A1.0 s
B1.5 s
C2.0 s
D3.0 s

Correct answer

B. 1.5 s

Step-by-step solution

aligned Velocity on hitting the surface & = 2 9.8 4.9 & =9.8 ~m / s aligned Velocity after first bounce, v= 3 4 9.8 Time taken from first bounce to the second bounce = 2 v g =2 3 4 9.8 1 9.8 =1.5 ~s

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