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Which of the following choices best explains what Watts represent?
1. joules per meter
2. joules per second
3. newtons per meter
4. newtons per second
5. meters per second
Power is
1. the amount of work done.
2. rate at which work is done
3. the force x distance
4. the force x distance (if F and d are in the same direction)
A 55 kg person walks up a staircase, and a second 55 kg person runs up the staircase. Who develops more power and why?
1. the person who walks up because he takes more time, using more energy
2. the person who runs up because he takes less time
3. same power for both because both cover the same distance with the same force
4. not enough information to determine

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