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A small, 250 gg cart is moving at 1.80 m/sm/s on a frictionless track when it...

A small, 250 gg cart is moving at 1.80 m/sm/s on a frictionless track when it collides with a larger, 3.00 kgkg cart at rest. After the collision, the small cart recoils at 0.820 m/sm/s .

v = _____

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