1. Period 2 Question 1

2. The earth exerts a gravitational force on a ball, pulling it down. Does the ball exert a gravitational force on the earth? a) No, it does not, since the earth is not moving towards the ball b) Yes, but the ball attracts the earth with much smaller force than the earth attracts the ball c) The ball will exert a force on the earth only at the moment when it touches the earth surface d) Yes, and the force acting on the earth is equal in magnitude to the force acting on the ball

3. Period 2 Question 2

4. Riding an elevator moving upward with a constant speed, you begin the game of darts. Do you have to aim your darts (as compared to playing in the elevator which is not moving): a) higher b) lower c) same d) none of the above

5. Period 3 Question 1

6. A small car collides with a large truck. The force applied on the car as compared to the force applied on the truck is: a) smaller b) the same c) larger d) depends on the angle of collision

7. Period 3 Question 2

8. Riding an elevator moving upward with a constant acceleration, you begin the game of darts. Do you have to aim your darts (as compared to playing in the elevator which is not moving): a) higher b) lower c) same d) none of the above