Describe the changes in kinetic energy in the following situations: a a baseball thrown vertically upward that then retuns to the ground b a car traveling at a constant velocity down the road c. an elevator at rest at the bottom of a building d the elevator accelerating upward

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.

As the distance from a magnet increases, what happens to the magnet force?

Are formed where bumps from two surfaces come into contact ?