The following is a graph of the vertical velocity vs. time of a projectile. Consider the following 4 questions: vy (t) 7. At what point, if any, on the graph is the projectile vertically at rest? 8. Briefly Describe the nature of the vertical motion in the upper portion of the graph. 9. Briefly describe the nature of the vertical motion in the lower portion of the graph. 10. Assuming this graph covers the entire time of the projectile's flight, is the trajectory symmetric or asymmetric, and why? 11. When the apple was at rest upon a level table, we found the Normal Force to be equal in magntude and opposite in direction to the Weight Force. Are these two forces 3"d law pairs? Why or why not