Question

A force of 10 N acts on a body of mass 20 kg for 10 seconds. Change in its momentum is(a) 5 kg m/s (b) 100 kg m/s(c) 200 kg m/s (d) 1000 kg m/s

Answer 1

F=ma

F=m*(v-u/t)

Ft=m(v-u)

10*10=change in momentum

Change in Momentum =100 kg.m/s