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?

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

Cheers

Best of Luck

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