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physics

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A 0.70 kg ball is moving horizontally with a speed of 8.8 m/s when it strikes a vertical wall. The ball rebounds with a speed of 3.7 m/s. What is the magnitude of the change in linear momentum of the ball?
-I am not sure how to honestly to figure this one out.

  • physics -

    final momentum - initial momentum

    m(Vf)-m(-Vi)= (notice the negative sign in the second velocityk, it is going opposite to final velocity.

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