Question

A force of 10N acts up on body of mass 2kg for 3secondsFind the K.E acquired by the body in 3 seconds and 6seconds

Answer 1

Answer:

Force=10 Newton

M of body=2 kg

T=3 Second

Initial velocity =0

So apply :-

F=ma

=10N=2kg×(v-u)/t

=10N=2kg×(v-u)/3sec

=30/2 =v

=15m/s =v

Now :-

K.E= 1/2mv²

=1/2×2kg×225

=225J