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A 3-kg toy car with a speed of 6 m/s collides head-on with a 2-kg car...

A 3-kg toy car with a speed of 6 m/s collides head-on with a 2-kg car traveling in the opposite direction with a speed of 4 m/s. If the cars are locked together after the collision with a speed of 3.435 m/s, how much kinetic energy is lost?

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na 2 2. 112/3t2)3435 つ 29.5丁

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