Energy Transformations

Question 1

Which statements best describe the law of conservation of energy? Check all that apply.The total amount of energy in the universe remains constant.Energy can be created or destroyed.Energy cannot be created or destroyed.Energy can change from one type to another. In a closed, isolated system, energy is conserved.

Revolt · Accepted Answer

The total amount of energy in the universe remains constant.; Energy cannot be created or destroyed.; Energy can change from one type to another.; In a closed, isolated system, energy is conserved.

Question 2

An object at position has all potential energy.

Revolt · Accepted Answer

A

Question 3

An object at position has all kinetic energy.

Revolt · Accepted Answer

C

Question 4

An object at position has about half potential energy and half kinetic energy.

Revolt · Accepted Answer

B

Question 5

A 100 kg roller coaster car is located at the top of a hill where the height is 20 m. What is the velocity when it reaches the bottom of the hill?

Revolt · Accepted Answer

19.8 m/s

Question 6

A rubber band has potential energy of 5 J. If the spring constant of the rubber band is 50 N/m, what is the displacement of the rubber band?

Revolt · Accepted Answer

0.4 m

Energy Transformations Answers

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