When you apply a horizontal force of 54 n to a block the

Question

When you apply a horizontal force of 54 N to a block, the block moves across the floor at a constant speed (μ_k = μ_s).

(a) What happens if instead you apply a force of 48 N to the block initially at rest?

The block decelerates (the speed continually decreases).

The block doesn't move.

The block moves at a constant speed, but it moves more slowly.

(b) When you apply a force of 48 N to the block initially at rest, what is the magnitude of the horizontal component of the force that the floor exerts on the block?

F_hor =  N

(c) What happens if instead you exert a force of 63 N?

The block accelerates (the speed continually increases).

The block moves at a constant speed, but it moves faster.

The block doesn't move.

(d) When you apply a force of 63 N, what is the magnitude of the horizontal component of the force that the floor exerts on the block?

F_hor =  N