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A 14,000-kg boxcar is coasting at 1.50 m/s along a horizontal track when it suddenly hits and couples with a stationary 10,000-kg boxcar. A) What

A 14,000-kg boxcar is coasting at 1.50 m/s along a horizontal track when it suddenly hits and couples with a stationary 10,000-kg boxcar. A) What is the speed of the cars just after the collision? B) How much kinetic energy was lost (KE = KEf - KEi) in the collision?

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