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Estrella Gibson
14 August, 19:03
A 6,600 kg train car moving at + 2.0m/s
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Makhi
14 August, 21:24
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Assuming the whole question is this:
A 6600 kg train car moving at + 2.0 m/s bumps into and locks together with one of mass 5400 kg moving at 3.0 m/s. What is their final velocity?
you would do:
6600 (2) - 5400 (3) = (6600+5400) v
13200 - 16200 = 12000v
v = - 0.25 m/s
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Christopher
14 August, 21:35
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The answer is v = -.2 5
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