Apaper placed in between two books can be quickly pulled out without moving the books. which statement explains this phenomenon a.) there are no forces acting between the books and the paper. b.) the pull of gravity on the book is greater than the force of gravity on the paper. c.) the two books exert force only on each other and not on the paper. d.) the books have a great deal of inertia and do not move easily.

A2-kg bowling ball is 1 meter off the ground on a post when it falls. just before it reaches the ground, its traveling 4.4 m/s. assuming that there is no air resistant, which statement is true a. the initial potential energy is less then the final kinetic energy b. the mechanical energy is not conserved c. the mechanical energy is conserved d. the initial potential energy is greater than the final kinetic energy