Question

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

Answer 1

Answer:

Explanation:

u=5m/s, v=2m/s, m=20kg

W=F*S

=mas

v²=u²+2as

2²=5²+2as

as=(4-25)/2

=-10.5m²/s²

W=20*-10.5

=-210J