What is the power output for a 60.0-kg woman who runs up a 3.00 m high flight

Question:

What is the power output for a 60.0-kg woman who runs up a 3.00 m high flight of stairs in 3.50 s, starting from rest but having a final speed of 2.00 m/s? (See Figure 7.21.)

Vo = 0 N=-W w = mg h KE + PEg

Strategy and Concept

The work going into mechanical energy is W = KE +PE. At the bottom of the stairs, we take both KE and PEg as

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