Chapter 3.2, Problem 2eT

For motion 1, draw vector in region II of the enlargement that represent the momentum of the ball at the top of the ramp and at the bottom of the ramp (i.e., at the top and bottom of region II). Use these Vector to construct the change in momentum vector $\Delta \stackrel{\to }{p}$ .

How is the direction of $\Delta \stackrel{\to }{p}$ related to the direction of the net force on the ball as it rolls down the ramp? Is your answer consistent with the impulse-momentum theorem?