Practice Potential Energy (10.2.3) - Work and Energy

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9 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define potential energy in your own words.
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Think about energy related to height and position.
Question 2.
What is the formula for gravitational potential energy?
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Recall the symbols for mass, gravity, and height.
3Question 3.
What is potential energy directly related to?
- Mass
- Height
- Both Mass and Height
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Remember the formula PE = mgh.
4Question 4.
True or False: An object at rest has potential energy.
- True
- False
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Think about energy stored due to position.
Question 5.
A rock is dropped from a height of 20 m. Calculate the potential energy at that height. If it falls freely, what will its kinetic energy be just before it hits the ground?
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Use the PE formula and remember all PE turns into KE when falling.
Question 6.
If a cat weighing 5 kg is sitting on a ledge 3 meters above the ground, what is its potential energy? If it jumps down to the ground, what happens to that energy?
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Think about how height translates to stored energy.

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