Aball is dropped and falls with an acceleration of 9.8 m/s2 downward. it hits the ground with a velocity of 49 m/s downward. how long did it take the ball to fall to the ground?

Use the data provided to calculate the gravitational potential energy of each cylinder mass. round your answers to the nearest tenth. 3 kg: kj 6 kg: kj 9 kg: kj

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final