Please help ?.

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

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.