Two friends challenge each other to a race up a flight of stairs (h=4.0m) Joe, who has a mass of 150kg, makes the climb in 8.0s while mike, 120kg took 5.0s to make the climb. Use g=10m/s^2

A.) Explain why joe did more work than mike.

B.) Explain why mike was more powerful than joe.


PLEASE HELP!!!