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Q. A 9300 KG boxcar traveling at 15 m/s strikes a second box car at rest. The two stick together and move off with a speed of 6 m/s. What is the mass of the second car?

Q. A bullet is fired at an angle of 60o with an initial velocity of 200.0 m/s. How long is the bullet in the air? What is the maximum height reached by the bullet?

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