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physics

A 1200 kg car traveling north at 14 m/s is rear ended by a 2000 kg truck traveling at 25 m/s. If the truck and car lock bumpers and stick together, what is their speed immediately after the collision?

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  1. momentum is conserved

    (1200 * 14) + (2000 * 25) =
    ... (1200 + 2000) * v

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