Potential Energy Kinetic Energy Mechanical Graphs

The graph shown could represent which of these?

• A book released from a height with the dotted line representing potential energy and the solid line representing kinetic energy.

• A book released from a height with the dotted line representing kinetic energy and the solid line representing potential energy.

• A pendulum released from a height with the dotted line representing potential energy and the solid line representing kinetic energy.

• A pendulum released from a height with the dotted line representing kinetic energy and the solid line representing potential energy.

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In the figure, potential energy is being converted into kinetic energy from

• point A to point B

• point B to point C

• The only energy involved here is kinetic.

• Energy is not being converted.

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How would you describe the relationship between the mass of a car and its kinetic energy?

• As the mass of a car increases, its kinetic energy increases.

• As the mass of a car increases, its kinetic energy decreases.

• As the mass of a car decreases, its kinetic energy increases.

• There is no clear relationship between mass and kinetic energy.

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

• A.

• B.

• C.

• D.

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Which point on the pendulum's swing represents the minimum potential energy?

• A

• B

• C

• A & C

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This graph MOST LIKELY describes the potential energy and kinetic energy of a roller coaster going

• up a hill

• down a hill

• up a hill and then rolling back down the other side.

• down a hill and then rolling back up the other side.

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

HINT* = Potiental Energy x Gravitational Constant x Height

• 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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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

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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