4. A 2.0 kg block is placed on an incline making an angle of 65^o with the vertical (see figure). The coefficient of kinetic friction between the block and the incline is 0.3, and there is an external force of 10N pushing the block along the incline as shown in the figure.

a. (5 points)

What is the normal force acting on the block from the incline?
 
 
 
 
 
 
 

b. (8 points)

Assume the block is sliding, what is the component of the total force acting on the block along the incline direction? Please indicate your positive direction clearly.
 
 
 
 
 
 
 

c. (5 points)

What is the acceleration of the block? In what direction?
 
 
 
 
 
 
 
 

d. (7 points)

If the block begins its motion from rest, it takes how long (time) for it to move a distance of 2m along the incline?