Center of MassHard

Question

A ball of mass = 100 gm is released from a height h1 = 2.5 m from the ground level and then rebounds to a height h2 = 0.625 m. The time of contact of the ball and the ground is ᐃt = 0.01 sec. The impulsive (impact) force offered by the ball on the ground is :       

Options

A.105 N
B.1.05 N
C.2.08 N
D.208 N

Solution

I = f × ᐃt    and    F =
F =
F = 105 N

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