Kinetic and Potential Energy

Based on the diagram of a roller coaster car on a roller coaster track, what statement is true?

• The car at point A has more kinetic energy than the car at point C.

• The car at point C has less kinetic energy than the car at point B.

• The car at point C has more kinetic energy than the car at point B.

• The car at point D has less potential energy than the car at point B.

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Which point on the roller coaster's path represents the maximum potential energy?

• A

• B

• C

• D

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Consider the pendulum. At what point is the kinetic energy the greatest?

• A.

• B.

• C.

• D.

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How can we increase the gravitational potential energy of the car?

• Strap a boulder to the car so that it weighs more.

• Keep the length of the hill at 50 m but only 5 m tall.

• Take the interior out of the car so that the car has less mass.

• Keep the hill at 10 m tall but increase the length of the hill so that the car has farther to roll.

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NGSS.MS-PS3-2

The mass of all bicycles and riders indicated in the graph are equal. What indicates the order of their average velocity from greatest to least?

• A, D, C, B

• D, B, C, A

• C, A, D, B

• B, C, A, D

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NGSS.MS-PS3-1

The ___________ energy in a mechanical system is determined by adding the potential and kinetic energy together.

• total

• massive

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The initial ___________ energy is equal to zero because the starting point is set at zero height to make things easier.

• kinetic

• potential

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Potential and Kinetic energy are ________________ proportional.

• inversely

• directly

One way to describe potential energy is ______ energy.

• kinetic

• mobile

• stored

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What do you know about the law of conservation of energy? Check all the statements that are true according to this law.

• The total amount of mass in a system remains constant regardless of the changes that take place in that system.

• Energy is neither created or destroyed; it only changes form.

• 
• 
• In a closed system, i.e., a system that isolated from its surroundings, the total energy of the system is conserved.

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