1. Mrs. Laubscher

2. 1. Inertia 2. Unbalanced 3. Gravitational 4. Net

3. 1. It is moving with increasing speed 2. It is moving with a faster speed than it was before 3. It has a high constant velocity 4. It is changing direction

4. 1. Speed increases 2. Acceleration increases 3. Both increase 4. None of these

5. 1. Have rougher surfaces 2. Are farther apart 3. Have greater masses 4. Are moving at a greater speed.

6. 1. Different on the moon than on Earth 2. A measure of gravitational force 3. Measured in newtons 4. A measure of the amount of matter

7. 1. Rolling friction 2. Static friction 3. Sliding friction 4. Fluid friction

8. 1. 3 km/hr 2. 6 km/hr 3. 10 km/hr 4. 20 km/hr

9. 1. 10 m/s 2. 50 m/s 3. 100 m/s 4. More than 150 m/s

10. 1. 8 N North 2. 20 N South 3. 20 N North 4. 8 N South

11. 1. Your mass would go down but your weight would stay the same. 2. Your weight would go down but your mass would stay the same. 3. Both your mass and weight would change. 4. Your weight would go up but your mass would stay the same.

12. 1. An unbalanced force 2. Inertia 3. A balanced force 4. A zero net force

13. 1. Going at a constant speed 2. Accelerating at a constant speed 3. Not moving 4. Decelerating

14. 1. Going at a constant speed 2. Gradually accelerating 3. Gradually decelerating 4. Going at a constant acceleration

15. 1. Going from far away to closer to home 2. Decelerating 3. Going backwards 4. Accelerating towards the start

16. 1. A spider 2. A frog 3. A cat 4. A bear

17. 1. Add 2. Subtract 3. Multiply 4. Divide 5. Average 6. Switch

18. 1. Increase the force and increase the mass 2. Decrease the force and decrease the speed 3. Increase the force and increase the speed 4. Increase the force and decrease the mass

19. 1. It’s also Newton’s first law 2. It is caused by applying an unbalanced non-zero net force. 3. It is a resistance to motion 4. It says that an object in motion tends to stay in motion at a constant velocity

20. 1. Continue to orbit the Earth 2. Orbit the sun 3. Fly off in a straight line 4. Crash into Earth

21. 1. Centripetal force 2. Centrifugal force 3. Terminal velocity 4. Free fall

22. 1. Acceleration 2. Momentum 3. Force 4. Speed

23. 1. Law of conservation of momentum 2. The amount of mass of both objects added together 3. The total amount of momentum 4. The force of how hard the first object hit the second object

24. 1. You can throw the tennis ball faster. 2. Newton’s First Law 3. Newton’s Second Law 4. Newton’s Third Law 5. The Law of Conservation of Momentum 6. Centripetal Force 7. The Law of Universal Gravitation

25. 1. Paddling creates a balanced force 2. Newton’s First Law 3. Newton’s Second Law 4. Newton’s Third Law 5. The Law of Conservation of Momentum 6. Centripetal Force 7. The Law of Universal Gravitation

26. 1. Newton’s First Law 2. Newton’s Second Law 3. Newton’s Third Law 4. The Law of Conservation of Momentum 5. Centripetal Force 6. Earth has a lot of gravity

27. 1. Law of Universal Gravitation 2. Newton’s First Law 3. F = m x a 4. F = m/a 5. Newton’s Third Law 6. Law of Conservation of Momentum 7. Elastic & inelastic collisions

28. 1. Enter answer text...