A force of 12N acts on a mass of 1.5 kg at rest for 3 s. Find the velocity and the momentum of the body after 3 s.

Force=Final-initial momentum/Time Taken
12N=1.5v-0/3
36N=1.5v
v=360/15
v=24m/s
final momentum=1.5x24m/s
                          =15/10 x 24
                           =36m/s