A loaded freight car has 5 times as much mass as an empty
A loaded freight car has 5 times as much mass as an empty freightcar. If the loaded car coasts at 2.0 m/s and collides withand attaches to the empty car at rest, what will be the speed of both cars after collision?
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a loaded freight car has 5 times as much mass as an empty freightcar if the loaded car coasts at 20 ms and collides
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