Question

Certain force acting on a 20 kg mass changes its velocity from
5 ms to 2 m sl. Calculate the work done by the force.​

Answer 1

Answer:

Explanation:

Change in K.E = work done

Change in K.E = 1/2m(vf)^2 - 1/2m(vi)^2

= 40 - 250= -210J