A SMG gun is attached to a railroad flatcar that rolls with negligible friction. If the railroad car has a mass of 7.25 X10^4 kg, how many bullets of mass 35 g would have to be fired at 200 m/s off the back to give the railroad car a forward velocity of 0.5 m/s?

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A SMG gun is attached to a railroad flatcar that rolls with negligible friction. If the
railroad car has a mass of 7.25 X10^4 kg, how many bullets of mass 35 g would have to be
fired at 200 m/s off the back to give the railroad car a forward velocity of 0.5 m/s?
Transcribed Image Text:A SMG gun is attached to a railroad flatcar that rolls with negligible friction. If the railroad car has a mass of 7.25 X10^4 kg, how many bullets of mass 35 g would have to be fired at 200 m/s off the back to give the railroad car a forward velocity of 0.5 m/s?
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