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A ball is dropped from a height h. If the coefficient of restitution be e, then to what height will it rise after jumping twice from the ground
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Correct option is D
hn=he2n, if n = 2 then hn=he4
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A sphere collides with another sphere of identical mass. After collision, the two spheres move. The collision is inelastic. Then the angle between the directions of the two spheres is
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