Questions
A glass marble dropped from a certain height above the horizontal surface reaches the surface in time t and then continues to bounce up and down. The time in which the marble finally comes to rest is
detailed solution
Correct option is B
Total time= t +2et +2e2 t +2e3 t+…..=t+2et1−e=t1+2e1−e=t1+e1−eTalk 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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