This document outlines objectives and concepts related to work, power, and energy. It defines work as the product of force and displacement when they are in the same direction. It introduces kinetic energy and potential energy, and discusses how the conservation of mechanical energy applies to situations where energy is transferred between kinetic and potential forms. Power is defined as the rate at which work is done. Examples are provided to demonstrate calculations of work, kinetic energy, potential energy, and power.

1. Chapter 5 Work, Power and Energy

10. 100 N 20 m 60 o

20. Kinetic Energy

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30. Roller Coaster v 1 = 4.0m/s m=1.0 kg h 1 = 10 m h 1 = 5 m h 1 = 4 m h 1 = 2 m Calculate the total energy and the velocity at the top of each hill.

31. h 1 = 10 m h 1 = 5 m h 1 = 4 m h 1 = 2 m v 1 = 4.0m/s m=1.0 kg