A 20000-kg railroad car travels down the track at 30 msec
A 20,000-kg railroad car travels down the track at 30 m/sec and hits a second stationary railroad car of 10,000 kg. The cars become coupled and continue traveling. Calculate the final velocity of the cars.
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a 20000-kg railroad car travels down the track at 30 msec and hits a second stationary railroad car of 10000 kg the
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