Answers PhysicsUnderstanding Energy

Understanding Energy — Test Answers

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Which best describes Step 4?

Elastic potential energy changes to gravitational potential energy.

Kristina does work to increase the elastic potential energy.

Kristina does work to increase the gravitational potential energy.

Gravitational potential energy changes to elastic potential energy.

Which best summarizes Brandi’s statement about doing work while posing?

She did more work using her right hand than her left because her right hand was higher.

She did work the entire time she posed because she was tired at the end.

She did no work because she did not exert any forces on objects.

She did no work because she did not move the scales or sword while she posed.

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