Question

A body of mass 5 kg is moving with a velocity of 20 ms''. A force is applied to the body for 25 s
and it attains a velocity of 40 ms. What is the force applied?
(Ans. 4 N)

Answer 1

f =mv-mu / t

f= 5(40-20)/25

f = 5*20 /25

f= /25

f= 4 N