1. The problem statement, all variables and given/known data Got a couple of physics question from my class: 1)A rock is thrown vertically upward from the surface of the earth. The rock rises to its maximum height and then falls back towards the surface of the earth. Which of the following statements is true if air resistance is neglected? A- As the rock rises, the acceleration vector points upward B- the acceleration of the rock is zero when the rock is at the higest point C-The speed of the rock always points D- The velocity and acceleration of the rock always points in the same direction. E- The acceleration vector always points downward. 2) A skydiver with a weight of 50 N falls with a constant downward velocity after her parachute is deployed. Which Statement is not true concerning the situation? A- The skydiver is not acceleration B- The magnitude of the air drag force is 50 N C- The net force on the skydiver is zero D- The direction of the air drag force in downward E- The direction of the weight force is downward For question 3, can sombody give me some example? 3) Give an example in which an object, at a given instant, will have zero velocity and non-zero acceleration. Give an example in which an object can have zero acceleration and non-zero velocity. In other worlds, you are to give two different examples for this problem. 2. Relevant equations 3. The attempt at a solution Its my first physic class and im having a hard time understanding it...It is not a homework question, its just a question i want to work on.