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 130,000 kg and a velocity of 0.300 m/s, and the second having a mass of 95,000 kg and a velocity of -0.120 m/s. (The minus indicates direction of motion.) What is their final velocity?

Q: Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are…

A: Givencar 1            velocity, v1=0.33 m/s        mass,  m1=2.25×105 kgcar 2       velocity,…

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Q: Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are…

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Q: Problem 3: A student of mass m = 51 kg runs at a velocity v; = 1.53 m/s before leaping on a…

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”