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a 1500 kg car traveling at 40 m/s collides elastically with 3000 kg truck traveling 30...

a 1500 kg car traveling at 40 m/s collides elastically with 3000 kg truck traveling 30 m/s. if the speed of the car after the collision is 26.66 m/s, then the speed of the truck after the collision is how many m/s?

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