Question

The net force acting on a body of mass 4kg moving with a uniform velocity of 5m/s is?

Answer 1

As the velocity is uniform
This a=0
F=ma
F=0

Answer 2

we know that acceleration is equal to the change in velocity per unit time
but here the change is 0 because the velocity is constant
so a=0
therefore F=0
because F = ma=4×0=0