Compute how fast is dan going as his feet hit the ground

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Dan is gliding on his skateboard at 3.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground? Dan's mass is 55 kg and the skateboard's mass is 5.0 kg.

Reference no: EM13496231

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