H Hetty New member Jul 14, 2009 #1 A 40-kg boy runs up a staircase to a floor 5 m higher in 7 s. His power output is a.1.4 kW b.29 W c.13.7 kW d.280 W
A 40-kg boy runs up a staircase to a floor 5 m higher in 7 s. His power output is a.1.4 kW b.29 W c.13.7 kW d.280 W
