Mechanical Energy Review

When a roller coaster is at the top of a hill it has

• high potential energy

• high kinetic energy

• low potential energy

• equal amounts of kinetic and potential energy

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When a roller coaster is at the bottom of a hill it has

• high potential energy

• high kinetic energy

• low kinetic energy

• equal amounts of kinetic and potential energy

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Kinetic energy depends on

• mass and height

• height and speed

• mass and speed

• mass and force

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Potential energy depends on

• mass and height

• height and speed

• mass and speed

• height and force

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Energy and work are measured in

• kilograms

• meters

• Joules

• m/s

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At what position does the rock have the greatest kinetic energy?

• A
• B
• D
• E

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What kind of energy is in a rock at the edge of a cliff?

• Potential
• Kinetic

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This is an example of what type of energy?

• Kinetic

• Potential

• Electric

• Thermal

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Which of the following objects has the most kinetic energy?

• A 20 kg toddler running at 5 m/s
• A 50 kg toddler running at  30 m/s
• A 90 kg toddler running at 30 m/s
• A 100 kg  toddler running at 2 m/s

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As a roller coaster goes downhill

• kinetic energy is converted into potential energy.

• potential energy is converted into kinetic energy.

• electrical energy is converted into potential energy.

• potential energy is converted into electrical energy.

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