Question

For how long should a force of 100 newton act on a body of 20kg so that it acquirs a velocity of 100m/sec
i want proper answer with explanation

Answer 1

As there constant force
there constant acceleration a=F/m=100/20=5 ms-2
Assume that object is initially at rest
intial velocity u=0
v=at
final velocity v=100 m/s
100=5t
t=100/5=20 s