Question

Certain force acting on a 20 kg mass changes its velocity from
5 ms-' to 2 m s- Calculate the work done by the force.
A mass of in kris at a point A on a table. It is moved to a point​

Answer 1

Certain force acting on 20 kg mass changes its velocity from 5 m s-1 to 2 m s-1. Calculate the work done by the force. (E k)2 = (1 )/2x 20 — (2)2 = 40 J.