Definition: This law states that, in any process, energy is neither created nor destroyed. It can only be converted from one form to another.

Jason and alejandro lift a chair 2 meters into the moving truck using 150 newtons of force. it takes them 3 seconds to lift the chair how much power did they use

What is the difference between electrically neutral objects and electrically charged objects

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?