Science

A railroad diesel engine weighs four times as much has a freight car. if the diesel engine coasts at 5 km/h into a freight car that is initially at rest, show that the speed of the coupled cars is 4 km/h.

asked by Tb
  1. 4m*5=(4m+m)V
    V=5(4/5)=4km/hr

    posted by bobpursley

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