Physics

1. A crane lifts a 500 kg wrecking ball ball up 10 meters a. How much potential energy does that wrecking ball have? b. When the operator releases the ball, it comes crashing down into an old car. How much kinetic energy does it hit the car with? c. What velocity will it be going when it hit the car? d. How much work did the crane motor have to do to lift the wrecking ball up to the original 10 meters? e. If it took 3 seconds for the motor to lift the ball up the 10 meters, how much power is that