A 57.8-kg person holding two 0.880-kg bricks stands on a 2.10-kg skateboard. Initially, the skateboard and the person are at rest. The person now throws the two bricks at the same time so that their speed relative to the person is 17.0 m/s, What is the recoil speed of the person and the skateboard relative to the ground, assuming the skateboard moves without friction?
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