Question

A force is applied on a body of mass 4 kg for 5 seconds changes its velocity from 10 m/s to 20 m/s. Find the power required.

Answer 1

work done = force applied * displacement so, W=F * S         =1/2 * m *(v^2 - u^2)         =1/2 * 4 *(20^2 - 10^2)         =2(300)         =600 Jpower = work done/time takenso, P=W/T        =600/5        =120 W  

Answer 2

plz mark brainliest if helped...