Monet Nguyen

I am having problem with this one physic problem. I am not sure where to start can someone help me? Thank You! A 15.0 kg box falls out of an Jet at an altitude of 3000 meters. It reaches a terminal speed of 50 meters per second in 3.20 seconds. Calculate...

A dam is used to block the passage of a river and to generate electricity. Approximately 58.4 x 103 kg of water falls each second through a height of 20.1 m. If one half of the gravitational potential energy of the water were converted to electrical energ...