Question

Find the kinetic energy of a ball of mass 500 gm moving with a speed of 20 m/s. Solve it

Answer 1

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Answer 2

A ball of mass 500 g hits a wall with a velocity 10 ms

−1

such that it makes an angle of 60

o

with the normal. It bounces back with the same speed making an angle of 60

o

with the normal. Determine the change in momentum.