Question

a body has KE of 10J how much work has to be done on it to stop it ?​

Answer 1

Keep the formula of work and it will be easy to solve

Answer 2

Answer:

-10 J

Explanation:

Since,

Work Done = change in kinetic energy.

Initial kinetic energy was 10 J

and final kinetic energy will be 0 (object in rest has 0 kinetic energy).

Therefore,

change in kinetic energy = final kinetic energy - initial kinetic energy = 0 - 10 = -10J.