A Boxcar of Mass 200 Tons at Rest Becomes Uncoupled

question 84

Multiple Choice

A boxcar of mass 200 tons at rest becomes uncoupled on a 1.5° grade.If the track is considered to be frictionless,what speed does the boxcar have after 10 seconds?

• A)0.37 m/s
• B)0.59 m/s
• C)2.6 m/s
• D)4.3 m/s

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