Physics

A ball of mass 0.15kg is dropped from a height of 1.0m onto a flat surface and rebounds to a height of 0.35m.

Calculate:

(a) The speed of the ball just before the impact,

(b) The speed of the ball just after impact,

(c) The change of momentum,

(d) The force of impact, if the time of contact at the surface was 60ms.

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