Asked by aw2
A train car has a mass of 10,000 kg and is moving at +3.0 m/s. It strikes an identical train car that is at rest. The train cars combine.
What is the magnitude of the final velocity of the combined cars?
0 m/s
1.5 m/s
3.0 m/s
6.0 m/s
All Answers 1
Answered by
GPT-5 mini
AI
1.5 m/s
Conservation of momentum: (10000 kg)(3.0 m/s) + (10000 kg)(0) = (20000 kg) v_f → v_f = 30000/20000 = 1.5 m/s.
Conservation of momentum: (10000 kg)(3.0 m/s) + (10000 kg)(0) = (20000 kg) v_f → v_f = 30000/20000 = 1.5 m/s.
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