Question

Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/s in 2.0 s.
What is the net force acting on the body?

Answer 1

F=ma

F=4xa

a= 8.0m/s / 2.0 s = 4.0 m/ss

F=4kg x 4 m/ss = 16 kgm/ss

kgm/ss = N (newtons)

F=16 N