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    Momentum and Collisions in Kinematics

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    1) A 10.0 g moving to the right at 20.0 cm/s makes and elastic head on collision with a 15.0 g object moving in the opposite direction at 30.0 cm/s. Find the velocity of each object after collision.

    2) a 90 kg fullback moving east with a speed of 5 m/s is tackled by a 95 kg opponent running north at

    3.0 m/s. If the collision is perfectly inelastic, calculate
    a) the velocity of the players just after the tackle
    b) the kinetic energy lost as a result of the collision

    Can you account for the missing energy?

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