Physics Unit 3 Quiz 3

In this picture, the rock (A) on the edge of the cliff has energy because it is held against a _____.

• force

• momentum

• work

• torque

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The rock hits one arm of the seesaw, which moves due the rock's _____ energy.

• kinetic

• potential

• elastic

• electromagnetic

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In this picture, the rock (A) on the edge of the cliff has _____ energy.

• kinetic

• potential

• mechanical

• pure

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Someone applies a force that pushes the rock off the cliff. The rock falls due to _____.

• gravity

• torque

• rotational inertia

• tangential speed

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The formula to determine a closed system's mechanical energy is _____.

• ME = KE + PE

• ME = PE + RE

• ME = KE - PE

• ME = PE - KE

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The rock's potential energy is ____ kinetic energy.

• converted to

• subtracted from

• added to

• multiplied by

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The rock's kinetic energy plus its potential energy act as _____ energy to perform work by the moving barrel.

• mechanical

• pure

• nuclear

• rotating

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To move a force of one newton one meter requires one _____ of work.

• watt

• joule

• gram

• m/s2

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Besides joules, work can be measured in _____.

• ft-lb

• gram

• watt

• m/s2

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The barrel moved a certain distance. Therefore, the rock's mechanical energy did perform _____.

• work

• power

• sound

• light

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