Which of the following is an example of the conversion of kinetic energy into gravitational potential energy? a) a person parachuting out of an airplane. b) a car racing around an oval track. c) a person skiing down a hill. d) a person walking up a hill

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

Which changes of state do the labels represent? a: b: c:

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the