How much momentum will a dumbbell of mass 10 Kg transfer to the floor if it falls from a height - Science - Force and Laws of Motion

Question

How much momentum will a dumbbell of mass 10 Kg transfer to the
floor if it falls from a height of 80 cm? Take its downwards
acceleration to be 10 m/s2?

Abhinav Verma · Accepted Answer

80 cm = 0 8 m
v2 = u2 + 2gs
v2 = 02 + 2 * 10 * 0 8
v2 = 16
v = 4
Velocity = 4 m / s
Momentum = mass * velocity
= 10 Kg * 4 m / s
= 40 kg - m / s
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How much momentum will a dumbbell of mass 10 Kg transfer to the floor if it falls from a height of 80 cm? Take its downwards acceleration to be 10 m/s2?