A sprinter has a mass of 75 kg and is able to run at a speed of 8.0 m/s for 9.5 s. Calculate the runner's power. Record your answer below to 3 place values. You do not need to show your work

Answer 1

To get the power in watts, divide the kinetic energy in joules by the duration of the time interval in seconds.

K = (1/2)mv² = (1/2)(75 kg)(8.0 m/s)² = ? joules

t = 9.5 s

P = K/t = ? watts

Plug in the numbers.