A block of mass m is on a frictionless hill at an angle ? to the horizontal and subject to the horizontal force, F.

a) Draw a free body diagram (FBD) for this block.

b) Find an expression for the acceleration and the normal force in terms of the weight of the block, the applied force and the angle of the slope.

c) Find numerical answers for the acceleration and normal force if m = 1 kg, F = 5 N and ? = 30 ^o .

d) How would you interpret your results if the acceleration is a negative number?