A ball is thrown downwards with initial speed = 6 m / s , from a point at height = 3.2 m above a horizontal floor. If the ball rebounds back to the same height then coefficient of restitution equals t

Question

A ball is thrown downwards with initial speed = 6 m / s , from a point at height = 3.2 m above a horizontal floor. If the ball rebounds back to the same height then coefficient of restitution equals to

TestHub · Accepted Answer

Velocity before hitting the ground = v 1 ​ Velocity of rebound = v 2 ​ v 1 2 ​ = 6 2 + 2 × 10 × 3.2 = 36 + 64 v 1 ​ = 10 m / s v 2 ​ = 2 g h ​ = 2 × 10 × 3.2 ​ = 8 m / s e = v 1 ​ v 2 ​ ​ = 10 8 ​ = 0.8

Physics - Center of Mass Question with Solution | TestHub

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