What speed does the boxcar have after 15 seconds
A boxcar of mass 600 tons at rest becomes uncoupled on a 5.00 grade. If the track is considered to be frictionless, what speed does the boxcar have after 15 seconds?
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A toy train rolls around a horizontal 1.7--diameter track. The coefficient of rolling friction is 0.10. What is the magnitude of the train's angular acceleration after it is released? (found) How long does it take the train to stop if it's release
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