Question

An object has a mass of 10 kg. Its initial velocity is 10 metre per second and its final velocity is 10 metre per second. Time taken is 10 s. Find force applied by it and work done.

Answer 1

Force applied and work done will be zero.

u=10m/s

v=10m/s

t=10s

Mass=10 kg

Accelaration=v-u/t

10-10/10=0

a=0m/s^2

F=ma

10 ×0

=0 N

Work done= f.s.cos

Now,as force is equal to 0, the work done will also be equal to 0.