PLEASE HELP AND HURRY Suppose that an object is moving horizontally with a constant velocity. The acceleration must be..
A. Constantly decreasing
B. Constantly increasing
C. positive
D. equal to zero

A50.0-n box is sliding on a rough horizontal floor, and the only horizontal force acting on it is friction. you observe that at one instant the box is sliding to the right at and that it stops in 2.25 s with uniform acceleration. what magnitude force does friction exert on this box

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.