Two people of the same mass run up the same set of stairs. Bob runs up in 3 seco
ID: 1452104 • Letter: T
Question
Two people of the same mass run up the same set of stairs. Bob runs up in 3 seconds and Ralph runs up in 6 seconds. Which is true?
Bob exerts more power than Ralph but not more energy
Ralph needs to get more exercise
Bob exerts more energy than Ralph but not more power
Bob exerts both more power and more energy than Ralph
1.Bob exerts more power than Ralph but not more energy
2.Ralph needs to get more exercise
3.Bob exerts more energy than Ralph but not more power
4.Bob exerts both more power and more energy than Ralph
Explanation / Answer
the answer is, 4 Bob exerts both more power and more energy than Ralph
because power is the rate of doing work , the faster the time the more the energy consumed hence more power
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