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2 June, 07:57

A train car with mass m1 = 590 kg is moving to the right with a speed of v1 = 7.3 m/s and collides with a second train car. The two cars latch together during the collision and then move off to the right at vf = 4.7 m/s. 1) What is the initial momentum of the first train car? 4307 kg-m/s

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  1. 2 June, 08:09
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    4307 kg. m/s

    Explanation:

    Momentum is the product of mass and velocity of an object.

    p=mv where p is momentum, m is mass of the object and v is the velocity.

    Taking right direction as positive, the initial momentum of the first train car will be 590*7.3=4307 kg. m/s

    We know that from law of conservation of linear momentum, the sum of initial momentum equals the sum of final momentum
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