2. Question #1  Name one feature of an object that would affect air resistance.

3. Question #2  When a falling object stops accelerating it has reached _________________.

4. Question #3  An unbalanced force that causes objects to move in a circular path is called ___________________.

5. Question #4  This happens when only the force of gravity is acting on an object.

6. Question #5  What is the acceleration of gravity?

7. Question #6  The path of one object around another in space.

8. Question #7  If a soft ball and a basketball are dropped from the same height, which will hit the ground first and why?

9. Question #8  If a football is dropped from a roof and hits the ground in 4 seconds. What is the footballs velocity as it hit the ground? ∆v=g X t

10. Question #9  Newton dropped his apple down a cliff and it hit the ground below with a velocity of 49 m/s. How long did it take for the apple to land? T=∆v/g

11. Question #10  The force that opposes the motion of objects through air.

12. Answers  1. size, shape, speed  2. terminal velocity  3. centripetal force  4. free fall  5. 9.8 m/s²  6. orbiting  7. same time. Larger mass has more inertia and more g.f. which balance each other out.  8. 39.2 m/s down  9. 5s  10. air resistance