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Question

A body falls from a height of h = 3m. What is the total distance (in meters) it travels before it stops, if thebody falls from a height h, strikes the ground and rebounds to a height e2h , falls down e2h and then rebounds back to a height e4h and so on. The coefficient of restitution between body and ground is e = 0.55.

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Solution

Total distance travelled = h+2e2h+2e4h+...

=h+2e2h[1+e2+e4....]=h+2e2h[11e2]=h(1+e21e2)=3[1+(0.5)21(0.5)2] = 5m


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