120000*.3-125000*.12=245000v ... solve to find v=.0857 m/s
Femi ..
asked 12/12/22What is the momentum
Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 120,000 kg and a velocity of 0.300 m/s, and the second having a mass of 125,000 kg and a velocity of −0.120 m/s. (The minus indicates direction of motion.)
What is their final velocity (in m/s)? (Enter a number.)
m/s
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