Question

A body moving with uniform velocity is stopped in 0.25 second by applying a retarding force of 200 Newton. The initial momentum of the body will be?

Answer 1

50kgm/s

Explanation:force is equal to change in momentum(by definition). So this means, 200=Δm/Δt .now we have initial momentum given and time required ie. Δt is also given and final momentum is zero. So we can find initial momentum by putting the values.

Initial momentum will be 50kgm/s.