Question

A body of mass 3 kg under constant force which causes a displacement s in meters in it given by s=13t2 work done by the force in 2 seconds is

Answer 1

mass is 3kg and s is 13t^2 and off respect to time dsbydt=13 .2 ds by dt.t^2 a= 26 work done = f.s 48 .12.2.t where t= 2 W= 48 .12.2.2 =2496 joule