1. What is frame of reference?

2. A system of objects that are not moving with respect to one another.

3. A person walks 3 miles for exercise everyday leaving her front porch at 8 a.m. and returning to her front porch at 10 a.m. What is her displacement?

4. Her displacement is 0.

5. What is the equation for average speed?

6. Average speed = distance/time

7. This type of speed is taken at a given moment.

8. Instaneous Speed

9. What is the difference between speed and velocity?

10. Speed does not have a direction, velocity does.

11. The slope of a distance time graph is the object’s _______________.

12. Speed

13. What is the speed of an object that traveled 100 m in 25 s?

14. 4 m/s

15. A distance-time graph indicates that an object moves 100m in 4s, then rests for 2s, then moves again 100m in 4s. What is the average speed?

16. 20 m/s

17. The slope of a speed time graph measures the objects___________.

18. Acceleration

19. Define acceleration.

20. A change in speed, a change in direction, or both.

21. When an object is slowing down, it’s acceleration will be ____________.

22. Negative

23. What is the difference between a vector quantity and a scalar quantity?

24. A scalar quantity only shows magnitude
A vector quantity shows magnitude and direction

25. The direction and length of a straight line is the object’s _____________.

26. Displacement

27. The SI units for speed are?

28. m/s

29. What is the acceleration due to gravity?

30. 9.8 m/s2

31. What is the formula for calculating acceleration?

32. VF – VI / t