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3. 3 Claim these words! balanced, unbalanced, and net force gravity force inertia friction motion velocity and speed acceleration Newton’s Laws of Motion (1,2,3)

4. 4 agree (+) ? disagree (—) ? 1. If you drop two empty plastic bottles, they will fall at the same speed.

5. 5 agree (+) ? disagree (—) ? 2 If you fill one bottle with water, it will fall faster than the empty one.

6. 6 agree (+) ? disagree (—) ? 3 The bottle of water has a greater force on it than the empty bottle has.

7. 7 agree (+) ? disagree (—) ? 4 The heavier the car, the more force is needed to make it speed up.

8. 8 agree (+) ? disagree (—) ? 5 A force is always needed to keep an object moving.

9. 9 agree (+) ? disagree (—) ? 6 A force is always needed to slow down an object.

10. 10 agree (+) ? disagree (—) ? 7 It takes more force to slow down a small car than a large truck because the truck is heavier.

11. 11 agree (+) ? disagree (—) ? 8 When a falling object hits the ground, the ground applies an upward force on the object.

12. 12 agree (+) ? disagree (—) ? 9 Friction exists only when two solid objects rub against each other.

13. 13 agree (+) ? disagree (—) ? 10 The way any object moves can be explained by Newton’s three laws of motion. Hold on! There are two bonus problems coming!

14. 14 Balanced forces ? Unbalanced forces? No net force ! Net force! 11

15. 15 Balanced forces ? Unbalanced forces? No net force ! Net force! 12

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