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Physics - Kinematics Question with Solution | TestHub

PhysicsKinematics1-DMedium2 minQB

PhysicsMediumsingle choice

A particle is thrown vertically upward with a speed $u$ from the top of a tower of height $h$ from ground level. If after first impact with ground it just reaches to height $h$ from ground the coefficient of restitution for the collision is :-

Options:

Answer:

Solution:

Impact speed: $v^{2} = u^{2} + 2 g h$ . After the bounce it just reaches height h: $(e v)^{2} = 2 g h$ .

$e = \frac{2 g h}{u ^{2} + 2 g h}$

Ans. (C)

Stream:JEESubject:PhysicsTopic:KinematicsSubtopic:1-D

⏱ 2mℹ️ Source: QB

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