Energy and Work Energy and Its Conservation Chapters 10 & 11.

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Presentation transcript:

Energy and Work Energy and Its Conservation Chapters 10 & 11

Definitions - 1

Definitions - 2

Example Problems

Kinetic Energy

Work and Energy

Stored Energy

Conservation of Energy

Examples

Example Problems  A 36.0-kg child slides down a playground slide that is 2.5 m high. At the bottom of the slide she is moving at 3.0 m/s. How much energy was lost as she slide down the slide?  A 10-kg test rocket is fired vertically. Its fuel gives it a kinetic energy of 1960 J by the time the rocket engine burns all of the fuel. What additional height will the rocket rise?  Pam, wearing a rocket pack, stands on frictionless ice. She has a mass of 45 kg. The rocket supplies a constant force for 22.0 m and Pam acquires a speed of 62.0 m/s. a. What is Pam’s final kinetic energy? b. What is the magnitude of the force?