Question

A ball of mass 2 kg is dropped from a height of 5 m. On striking the ground it rebounds with same speed

with which it struck the ground. Find the magnitude of net change in its momentum just after striking the

ground. [Take, g = 10 m/s2

]​

Answer 1

100 joules

.P.E = mgh

.m-2kg. h-5m

PE- 2 10* 5 =100 J

Answer 2

Answer:

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