Question

A ball of mass 100 g strikes a wall normally with a
speed of 10 m/s and rebounds with the same speed
but in opposite direction. The magnitude of change
in linear momentum of the ball will be
​

Answer 1

Answer:

After reflecting back the change in momentum is nothing but 2×initial momentum =2×0.5Kg×2m/s=2Kgm/s

Average force exerted is

Δt

change in momentum

Given that Δt=0.5s

so by putting above value we get Force=4N

Answer 2

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