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Questions and Answers
What is the skier's acceleration if friction is 45.0 N?
What is the skier's acceleration if friction is 45.0 N?
- 4.55 m/s^2
- 2.95 m/s^2
- 5.20 m/s^2 (correct)
- 3.88 m/s^2
What is the spring constant k of the perfectly elastic spring?
What is the spring constant k of the perfectly elastic spring?
- 6.0 N/m
- 7.0 N/m
- 9.0 N/m (correct)
- 8.0 N/m
What is the acceleration of the skier if friction is negligible?
What is the acceleration of the skier if friction is negligible?
- 8.41 m/s^2
- 5.88 m/s^2
- 7.25 m/s^2
- 6.67 m/s^2 (correct)
How much work is required to stretch the elastic spring an additional 6 cm?
How much work is required to stretch the elastic spring an additional 6 cm?
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How much work did the movers do pushing the crate across a rough floor without acceleration?
How much work did the movers do pushing the crate across a rough floor without acceleration?
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What is the net power needed to change the speed of a sport utility vehicle?
What is the net power needed to change the speed of a sport utility vehicle?
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