Question

A body of mass 4 kg is at rest. A force of 20 N acts on the body for 6 s. Calculate (i) the velocity acquired by the body (ii) change in momentum *​

Answer 1

Explanation:

Impulse on the body would be J−FΔt, where F=20N,t=3s also impulse is change in momentum :J=MΔV

so,

m(v−u)=Ft,m−4kg,u=0m/s gives,

4V=20×3→V=15m/s