A roller coaster car (mass = M) is on a track that forms a circular loop (radius = r) in the vertical plane. If the car is to just maintain contact with the track at the top of the loop, what is the minimum value for its speed at that point?
A) Mrg
B) 2 Mrg
C)
D)
E) /
D
Physics & Space Science
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Fill in the blank(s) with correct word
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A) anthracite. B) deeply buried oil sediments. C) swamps. D) lithified peat.
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Impulse: Calculate the impulse due to a force of 4.5 N that lasts for 1.4 s.
A. 6.3 kg? m/s B. 5.0 kg? m/s C. 5.7 kg? m/s D. 6.9 kg? m/s
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Action and reaction forces are parts of
A) a single interaction. B) a pair of interactions. C) multiple interactions.
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