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Two different air track carts are sliding to the right at 1.0 m/s. The leading cart...

Two different air track carts are sliding to the right at 1.0 m/s. The leading cart has a mass of 500g and the trailing cart has a mass of 200g. They are being held together by a string, but being pushed apart by a spring between the two carts. The spring between them has a spring constant of 150 N/m and is compressed 4.0 cm. At t=0, the string is snipped. What are the final velocities of both carts?

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