A 67.5-kg runner has a speed of 4.30 m/s at one instant during a long-distance event. (a) What is the runner’s kinetic energy at this instant?

A 67.5-kg runner has a speed of 4.30 m/s at one instant during a long-distance event. (a) What is the runner’s kinetic energy at this instant?KEi = _______J

A 67.5-kg runner has a speed of 4.30 m/s at one instant during a long-distance event.(a) What is the runner’s kinetic energy at this instant?KEi = _______J SolutionKE = 0.5*67.5*4.32 = 624.04 J