QuizFeb12 - 1 Decreasing the mass 3 times and increasing...

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Period 2 Question 1
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The kinetic energy of an object is increased 8 times  as a result of: 1. Increasing the mass 4 times 2. Increasing the speed 4 times 3. Increasing both the mass and the  speed 2 times 4. Increasing the speed 8 times 5. Applying a force which is 8 times  greater
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Period 2 Question 2
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When an object is dropped from a tower, what is the  effect of the air resistance? 1. Increases the objects kinetic energy  2. Increases the objects potential  energy  3. Does positive work on the object 4. Decreases the objects mechanical  energy  5. None of the above is correct
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Period 3 Question
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The kinetic energy of an object is increased by a factor of 27 by:
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Unformatted text preview: 1. Decreasing the mass 3 times and increasing the speed 3 times 2. Increasing the mass 3 times and increasing the speed 3 times 3. Increasing the speed 27 times and keeping the mass constant 4. Decreasing the mass 27 times and increasing the speed 9 times 5. None of the above is correct Period 3 Question 2 Two blocks (heavy and light) are released from the top of a building. The light falls straight down and the heavy slides down a ramp. If all friction is ignored, which one is moving faster when they reach the bottom? 1. heavy 2. light 3. both move with the same speed at the bottom 4. depends on the slide shape 5. insufficient information given...
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