Question

If the mass of body is 100 kg then find the work done if it is moving with speed of 126 km/h​

Answer 1

Answer

The work done is 6.125J

Speed=mass*velocity

or, 126000/3600=100*v

or, 35/100=v

v=0.35m/s

Now,

W=1/2*100*(0.35)^2

=50*0.1225

=6.125J