Question

A body of mass 5 kg is moving with velocity of 20m/s.if a force of 100n is applied on its for 10s in the same direction as its velocity what will be the velocity of the body

Answer 1

after applying 100 N force the acceleration of the body is
a= 100N /5kg=20 m/(s^2)
now ,
v = u+ at v= final velocity
or, v = (20+20×10) m/s u=initial velocity
v=220 m/s t=time