Understanding Energy: Kinetic and Potential

What is the definition of kinetic energy?

• The energy stored in an object due to its position or height.

• The energy an object possesses due to its motion.

• The energy stored in chemical bonds.

• The energy an object has due to its temperature.

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NGSS.MS-PS3-1

Which of the following best describes potential energy?

• The energy an object has because of its motion.

• The energy stored in an object due to its position or condition.

• The energy released during a chemical reaction.

• The energy an object has due to its temperature.

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NGSS.MS-PS3-2

How do you calculate the mechanical energy of an object?

• By adding its kinetic energy and potential energy.

• By subtracting its potential energy from its kinetic energy.

• By multiplying its kinetic energy by its potential energy.

• By dividing its kinetic energy by its potential energy.

• 3 J

• 6 J

• 9 J

• 18 J

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NGSS.MS-PS3-1

• 14.7 J

• 19.6 J

• 29.4 J

• 39.2 J

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Which of the following is an example of mechanical energy in real-world applications?

• A car parked on a hill.

• A wind turbine generating electricity.

• A battery storing chemical energy.

• A light bulb emitting light.

If a roller coaster at the top of a hill has 5000 J of potential energy and 2000 J of kinetic energy, what is its total mechanical energy?

• 2000 J

• 3000 J

• 5000 J

• 7000 J

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NGSS.MS-PS3-2

Which scenario best illustrates the conversion of potential energy to kinetic energy?

• A car accelerating on a flat road.

• A ball rolling down a hill.

• A light bulb being turned on.

• A person sitting still in a chair.

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NGSS.MS-PS3-2