14. If a 3 kg box is moving up a ramp with ramp angle 16 and a friction coefficient _k of 0.3, what is the force of friction on the box (in Newtons)?

a. 8.5 N.

b. 8.9 N.

c. 11.5 N.

d. 11.8 N.

e. 12.5 N.

15. Suppose instead the friction felt by the mass from the previous problem (#14) had magnitude 10 N (perhaps because the friction coefficient were different, but the mass and ramp angle were as before.) If the mass is briefly kicked uphill at an initial speed of 3 m/s and then coasts uphill, how far up the ramp would it go, measured diagonally?

a. 0.75 m

b. 0.95 m.

c. 1.03 m.

d. 1.80 m.

e. 2.31 m.