A boxcar of mass 250 tons at rest becomes uncoupled on a 4.0° grade. If the...
A boxcar of mass 250 tons at rest becomes uncoupled on a 4.0° grade. If the track is considered to be frictionless, what speed does the boxcar have after 11 seconds?
a. 0.1 m/s
b. 19.6 m/s
c. 12.8 m/s
d. 0.8 m/s
e. 7.5 m/s
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A boxcar of mass 250 tons at rest becomes uncoupled on a 4.0°
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