A Person Runs Up a Long Flight of Stairs in 10

question 10

Multiple Choice

A person runs up a long flight of stairs in 10 seconds.If the person's weight is 600 N and the vertical height of the stairs is 20 meters,the person's power output is

• A)0.
• B)3 W.
• C)30 W.
• D)1,200 W.
• E)12,000 W.