Physics, 05.11.2019 20:31 bm42400

Dan is gliding on his skateboard at 2.00 m/s . he suddenly jumps backward off the skateboard, kicking the skateboard forward at 7.00 m/s (as measured by an observer on the ground). dan's mass is 40.0 kg and the skateboard's mass is 7.00 kg .

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Dan is gliding on his skateboard at 2.00 m/s . he suddenly jumps backward off the skateboard, kickin...