Work, Energy, and Power (Pretest)

Energy in the form of motion.

• mechanical energy

• potential energy

• kinetic energy

• momentum

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Stored energy in the form of position or condition.

• potential energy

• kinetic energy

• momentum

• mechanical energy

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What is mechanical energy?

• total kinetic energy

• the energy of motion

• total kinetic and potential energy

• temperature plus heat

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Which of these items is not part of the law of conservation of energy?

• energy cannot be created

• energy cannot be destroyed

• energy can be transferred between forms

• energy is destroyed by friction

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NGSS.MS-PS3-5

Where is the kinetic energy of pendulum at its highest?

• at the top of the swing

• at the bottom of the swing

• at 1/4 of the swing

• at 3/4 of the swing

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NGSS.HS-PS3-2

At which point of this roller coaster is the energy 1/2 kinetic and 1/2 potential?

• A

• B

• C

• D

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NGSS.HS-PS3-2

Two equal mass marbles are at the top of a ramp. One marble falls to the ground off the back while the other rolls down the ramp. What is true about the marbles when they reach the ground?

• The marble that rolled down the ramp is moving faster than the marble that fell.

• The marble that fell down the back of the ramp is moving faster than the marble that rolled.

• The marble that rolled down the ramp is not moving when it reaches the ground.

• The two marbles are moving with the same speed.

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NGSS.MS-PS3-1

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If there is no friction on this track, at which point would the coaster have the most kinetic energy?

• A

• B

• C

• D

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Where is the roller coaster gaining potential energy?

• A to B

• B to C

• C to D

• The roller coaster is always losing potential energy

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NGSS.MS-PS3-2

What is the difference between calculating power and work?

• Power takes into account the time it takes to complete a task
• Work takes into account the time it takes to complete a task
• Power is force/area
• Work is force/area

Tags

NGSS.MS-PS3-5

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