At time t $=0$s$,$ the $50$ N crate is sitting at rest on the floor.$$

There is a coefficient of static friction$$s$=0\mathrm{.}400$ between the floor and the crate.

There is a coefficient of kinetic friction$$k$=0\mathrm{.}200$ between the floor and the crate.

An applied force F $=12\mathrm{.}0$ N is acting to on the box to the right.

A$)$ What is the value of the frictional force the box feels at time t $=0?$

f $=$ Answer $1$ Question $4$ N

B$)$ What is the value of the$$frictional force the box feels at time t $>0?$

f $=$ Answer $2$ Question $4$ N

$$

Consider the exact same situation, except the applied force is F$=24\mathrm{.}0$ N$.$

C$)$ What is the value of the$$frictional force the box feels at time t $=0?$

f $=$ Answer $3$ Question $4$ N

D$)$ What is the value of the$$frictional force the box feels at time t $>0?$

f $=$ Answer $4$ Question $4$ N

E$)$ What is the normal force acting on the box at t$>0?$

n $=$ Answer $5$ Question $4$ N