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Q. Amber,Samantha and Tena want to do the ultimate crash test. They set up a ramp with 7 books and run an 800-g car down the ramp. The velocity of the car at the end of the ramp is 4.8 m/s. If the 800-g car runs into a stationary 300-g car at the bottom of the ramp what is the velocity of the two cars after an inelastic collision?

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