A Boxcar of Mass 200 Tons at Rest Becomes Uncoupled $\degree$

Multiple Choice

A boxcar of mass 200 tons at rest becomes uncoupled on a 2.5F $\degree$ 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) 1.3 m/s
D) 4.3 m/s