The universe could be considered an isolated system because (2 points) A: many people think that no energy or matter exists outside the universe

B: energy and matter are created in the universe and flow freely into and out of the universe

C: energy is created outside the universe and matter is created within the universe

D: energy is created in the universe and matter is transferred out of the universe

Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?