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A car of mass 1500 kg and a small track of mass 2300 kg collide at...

A car of mass 1500 kg and a small track of mass 2300 kg collide at right angles at an icy intersection. The car was traveling east at 15 m/s and the truck was traveling north at 20 m/s when the collision took place. What is the speed of the combined wreck, assuming a completely inelastic collision.

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