Question

certain force acting on a 20kg mass changes its velocity from 5 metre second 2 metre second calculate the work done by the force​

Answer 1

Answer: 210JOULE IS THE ANSWER.

Explanation:

WORK DONE =CHANGE IN KINETIC ENERGY

            =1/2×MASS×(FINAL VELOCITY)²-(INITIAL VELOCITY)²

                       =1/2×20×(5)²-(2)²

                       =1/2×20×21

                       =210kgm/s² =210JOULE.

HOPE IT WILL HELP YOU..............

THANK YOU.

Answer 2

Explanation:

210 joule answer....