Eight boxcars are moving at a speed of 0.2 m/s along a track when they collide with a single identical boxcar headed in the opposite direction at 0.7 m/s.  If the line of boxcars successfully couple, what is the final velocity of the boxcars?  Assume the mass of a single boxcar is 6.5×104 kg.

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Q: Eight boxcars are moving at a speed of 0.2 m/s along a track when they collide with a single…

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Q: 120 100 80 60 40 20 10 20 30 40 50 time /s

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