Question

In a physics lab, a 80-kg student runs up a 2.5-meter tall flight of stairs in 2.0 seconds. The student's power rating is approximately W. a. 16 b. 64 c. 100 d. 160 e. 400 . 640 g. 1000 h. 4000 Thre roll t View Objectives Quit Mission Save Mission Selec а. С 8u 7 4 5 6 8 2 3

Answer 1

Work = mg delta h m = 80kg g = 10 m/s^2 delta h = 2.5m work = (80kg) (10 m/s^2) times (2.5m) Work = 2000 Jule Power Rating P = w/t = 2000 Jule/2.0 sec P = 1000 watt (g)