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A 2000kg large boxcar that rolls without friction is sitting at rest. It is shot by...

A 2000kg large boxcar that rolls without friction is sitting at rest. It is shot by a 20kg cannonball traveling 150m/s. What will the final velocity of the boxcar be in the following situations? a.) The cannon ball breaks through the boxcar walls and continues forward at 50m/s. b.) The cannonball breaks through one wall of the boxcar and then gets stuck inside the car. c.) The cannonball bounces off the boxcar wall rebounding with a reverse velocity of -50m/s. d.) Qualitatively explain why the boxcar ought to have the least speed when the cannonball passes through it and the most speed when the ball bounces?

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