Chapter 7 Review - Energy

Energy due to motion is ____________ energy. 

• Potential 
• Energy
• Kinetic
• Friction

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NGSS.MS-PS3-5

NGSS.MS-PS3-1

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

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NGSS.MS-PS3-1

__________ is stored energy. 

• Potential
• Kinetic
• None of the above 
• All of the above 

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NGSS.MS-PS3-2

At which point is potential energy greatest?

• W
• X
• Y
• Z

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NGSS.MS-PS3-2

Which is the best example that something has kinetic energy?

• a. a car parked on a steep hill 
• b. a tennis ball rolling across the court
• c. a picture hanging on the wall 
• d. a piece of coal before it's burned 

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NGSS.MS-PS3-5

NGSS.MS-PS3-1

NGSS.MS-PS3-4

When a pendulum swings, at which point is kinetic energy highest?

• 1
• 2
• 3
• 4

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NGSS.MS-PS3-5

NGSS.MS-PS3-1

Calculate the potential energy of a car with a mass of 2,500 kg that is on a hill 100 meters above sea level.

(Hint: Remember that acceleration is ALWAYS 9.8 m/s² because of gravity!!)

• 250,000 J

• 2,450,000 J

• 2,451,663 J

• 248 J

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NGSS.MS-PS3-2

Lilly's cat ran through your yard. The cat has a mass of 5 kg. He is running at a speed of 3 m/s. What is the kinetic energy of the cat as he runs?

• 8.5 J

• 45 J

• 7.5 J

• 22.5 J

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NGSS.MS-PS3-1

Alice kicks a soccer ball with a mass of 2.1 kg. The ball leaves the ground moving 30 m/s. What is the kinetic energy of the soccer ball?

• 567 J

• 900 J

• 945 J

• 30 J

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NGSS.MS-PS3-1

Ty lifts a set of 1250 kg weights a to a height of 2 m in a weight lifting contest. What GPE do the weights now have?

(Hint: Remember that acceleration is ALWAYS 9.8 m/s² because of gravity!!)

• 12,789 J

• 24,500 J

• 4,500 J

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NGSS.MS-PS2-4