Question

A body of mass 4Kg at rest is subjected to force of 16N. Calculate Kinetic energy of body at the end of 10s

Answer 1

Find acceleration of body by formula F=ma
Here a=16/4 which is 4ms-2

Use V=u+at to find velocity at end of 10s
Here u =0 as body is initially at rest
A=4
T=10

Find v and use KE = 1/2mv square to find KE