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Anna walks up the stairs on her way to class. She weighs 565 N and the stairs go up 3. 25 m

vertically.

a. What is the amount of work that Anna does?

b. Calculate her power output if she climbs the stairs in 12. 6 s.

c. What is her power output if she climbs the stairs in 10. 5 s?

d. What happens to the power output if the work stays the same and the time decreases?