(0) U 2 An 85 kg skateboarder takes a running jump onto his Skateboard, which has...
A 65 kg skater runs at 5 m/s and jumps onto his 2.5 kg skateboard which was initially stationary. What is the velocity of the skater and the board after he lands?
1. A boy takes a running jump off the high-dive board at the local pool. His speed as he leaves the board is 3.0 m/s and the board is 5.0 m above the water. What is his speed just before he hits the water? please include an energy chart 2. A roller-coaster car rolls over the crest of 18 m high hill at a speed of 3.2 m/s. The car then rolls down the track to the bottom of the...