An 7.00-kg box sits on a ramp that is inclined at 33.0∘ above
the horizontal. The coefficient of kinetic friction between the box
and the surface of the ramp is μk = 0.300. A constant horizontal
force F = 26.0 N is applied to the box (Figure 1), and the box
moves down the ramp.
If the box is initially at rest, what is its speed 2.00 s after
the force is applied?
v=??m/s