Dan is gliding on his skateboard at 2.00 m/s. He suddenly jumps backwardoff the skateboard, kicking the skateboard forward at 8.00 m/s (as measured by an observeron the ground). Dan’s mass is 60.0 kg and the skateboard’s mass is7.00 kg.
How fast is Dan going as his feet hit the ground?
Dan is going about 1.30m/s fast as his feet hit the ground.