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PHYSICS Honors
1.
Section 11-1 Questions
Explain how energy and work are related.
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2.
What type of energy does a wound watch spring have?
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3.
What form of energy does a running mechanical watch use?
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4.
When a watch runs down, what has happened to the energy?
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5.
Name the types of mechanical energy in the Earth-sun system.
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6.
Explain how energy and force are related.
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7.
Can the kinetic energy of a baseball ever have a negative value? Explain.
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8.
Does the work-energy theorem apply when a speeding car puts on its brakes and comes to a stop? Explain.
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9.
Can a baseball have potential energy and kinetic energy at the same time?
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10. A compact car and a semi-truck are both traveling at the same velocity. Which has more kinetic energy?
Why?
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11. Is it possible to exert a force and yet not cause a change in kinetic energy?
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12. Two identical balls are thrown from the top of a cliff, each with the same speed. One is thrown straight
down, the other straight up. How do the speeds and the kinetic energies of the balls compare as they strike the
ground?
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13. Work is required to lift a barbell. How many times as much work is required to lift the barbell three times as
high?
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14. If two identical bowling balls are raised to the same height, one on Earth and the other on the moon, which
has the larger potential energy relative to the surface of the bodies?
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15. A ball is dropped from the top of a tall building and reaches terminal velocity as it falls. Will the potential
energy of the ball upon release equal the kinetic energy it has when striking the ground? Explain.
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16. According to Einstein’s equation E0 = mc2, does the rock-Earth system have more or less mass when the
rock is lifted high above Earth than when the same rock is on Earth’s surface?
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