Please do both parts A and B. Show ALL work and do NOT skip any steps. also, explain WHY. It's very important.

Part A The plot in the figure shows the potential energy of a particle, due to the force exerted on it by another particle, as a function of distance. At which of the three points (X, Y or Z) labeled in the figure is the magnitude of the force on the particle greatest? Explain why. 0 Potential Energy X DistancePart B When you ride a bicycle (or drive a car), in what direction is the angular velocity of the wheels? To your left, right, forwards, backwards or up