Question

A boy of mass 40kg is running with a velocity of 0.5 m/s what is his ke

Answer 1

Mass = 40 kg

Velocity = 0.5 m/s

kinetic energy = 1/2 m v^2

                        = 1/2 (40)(0.5)^2

                        = 1/2 (40)(0.25)

                        = 5 J

Hence its kinetic energy is 5 J

hope this answer is helpful.