Question

(D) storage of energy
7.
If kinetic energy of a man of mass 40 kg while
running is 500 J, then his velocity is?​

Answer 1

Answer:

the formula of kinetic energy is

=1/2×m×v^2

As kinetic energy is given,

=500=1/2×40×v^2

=500=20xv^2

500/20=v^2

=25=v^2

v=5ms^-1