Question: A horizontal spring is compressed and a 4 kg block is placed on the left of the spring and a 7 kg block on the

A horizontal spring is compressed and a 4 kg block is placed on the left of the spring and a 7
kg block on the right. After the system is released from rest the 4 kg block slides to the left at 14 m/s
and the 7 kg block slides to the right. The surface is frictionless.
33. The speed of the 7 kg block after it loses contact with the spring is

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