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3. 100 200 400 300 400 CHOICE 1CHOICE 2CHOICE 3 CHOICE 4 300 200 400 200 100 500 100 200 300 400 CHOICE 5 100 500

4. Row 1, Col 1 What is the formula you use to find average speed? Total distance/total time

5. 1,2 Which unit do we use to measure distance? Centimeters

6. 1,3 What sorts of variables affect your average speed? The amount of distance and the amount of time.

7. 1,4 Define motion. The change in position over time.

8. 1,5 When do we use kilometers? Any large distance Example: one country to another

9. 2,1 Define acceleration. Give an example of acceleration The rate of change of velocity with time. A car increasing speed to 60 m/h while turning to the left

10. 2,2 Which SI unit do we use for acceleration? m/s 2

11. 2,3 What would a graph on a coordinate grid look like if we wanted it to represent no acceleration? It would have a zero slope made from a horizontal line.

12. 2,4 What is acceleration vector? Give an example. It must include distance, speed, and direction -Example -12 m/s 2 North

13. 2,5 How do you find average acceleration of an object? Subtract the initial velocity from the final velocity and then divide by the change in time.

14. 3,1 What is centripetal acceleration? Give an example The movement in a circular direction at a constant speed. Example: an object moving in a circle at 15 m/s

15. 3,2 What is contact force? Give an example of contact force. A force exerted during contact between objects is a contact force./Friction is an example of contact force between two surfaces

16. 3,3 What is inertia? The tendency of a moving object to continue moving at the same velocity unless an unbalanced force acts on it.

17. 3,4 What is an action-at-a-distance force and give an example. - This is when forces can act on each other from a distance An example is gravity or a magnet

18. 3,5 How do you find net force? Add them together if they are moving the same direction and subtract them if they are moving in different directions.

19. 4,1 What is the difference between a balanced force and an action-reaction force? - Balanced forces are exerted on a single object whereas action- reaction forces are exerted on different objects

20. 4,2 How do you know if something has a strong gravitational force? If two objects have a large mass and are close together.

21. 4,3 How do you find gravitational force? F = mg / force = mass x gravity

22. 4,4 Orbit describes both the act of an object circling in space because the object’s gravitational pull and the path the orbiting object takes. Define orbit.

23. 4,5 Gravitational force depends on both mass and distance What does the gravitational force depend on.

24. 5,1 Define gravity. - the force that pulls all objects toward one another

25. 5,2 What is free fall? - free fall has no other forces causing it to accelerate

26. 5,3` Define air resistance Air resistance refers to a force that acts against relative motion of an object through a liquid or gas.

27. 5,4 Give an example of air resistance. -Air resistance causes a sky diver to slow down.

28. 5,5 What do we know to be true about gravitational force? increase in mass does increase the resulting gravitational force *decrease in distances does increase the gravitational force between the objects. *gravity does act across all distances