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Q. A train that is 80m long begins uniform acceleration from rest toward a railway worker who is standing 150m from the track. When the front of the train passes the worker, the trains speed is 20m/s. How fast is the last car moving when it passes the worker?

Q. A 1500-kg car moving north at 27.0 m/s is struck by a 2165-kg car moving east at 18.0 m/s. The cars are stuck together. How fast and in what direction do they move immediately after the collision?

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