Questions
A ball A moving with a certain velocity collides with another ball B of the same mass at rest. If the coefficient of restitution is e, the ratio of the velocities of A and B just after the collision is
detailed solution
Correct option is D
Alternative Method : Conserving MomentummV1 + mV2 = mu1 + m X 0⇒ V1 + V2 = u1 ........................ (1)Also V2 - V1 / u1 = e ⇒ V2 - V1 = e u1 ................. (2)Sloving , V2 = (1+e) u1 / 2 ; (1+e) u1 / 2Talk to our academic expert!
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A steel ball is released from a height of 27 m onto a fixed horizontal steel plate. On bouncing the ball rises to a height of 3 m. Then co-efficient of restitution is
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