1. An Introduction to Acceleration: Learning Goal • The student will solve example questions related to uniformly accelerated motion. (B2.7, B3.3) “It goes from zero to 60 in about 3 seconds.”

2. An Introduction to Acceleration SPH4C

3. Acceleration Acceleration is defined as the change in the velocity of an object per interval of time, or:

4. Acceleration Acceleration is defined as the change in the velocity of an object per interval of time, or:

5. Acceleration Acceleration is defined as the change in the velocity of an object per interval of time, or:

6. Acceleration Acceleration is defined as the change in the velocity of an object per interval of time, or: v2 = final velocity and v1 = initial velocity

7. Acceleration Acceleration will have units of m/s/s or m/s2. (Notice also that acceleration is a vector.)

8. Example 1 Jake increases his velocity from 13 m/s [E] to 25 m/s [E] in 5.0 s. What is his acceleration?

9. Example 1 Jake increases his velocity from 13 m/s [E] to 25 m/s [E] in 5.0 s. What is his acceleration?

10. Example 1 Jake increases his velocity from 13 m/s [E] to 25 m/s [E] in 5.0 s. What is his acceleration?

11. Example 1 Jake increases his velocity from 13 m/s [E] to 25 m/s [E] in 5.0 s. What is his acceleration?

12. Example 1 Jake increases his velocity from 13 m/s [E] to 25 m/s [E] in 5.0 s. What is his acceleration? His acceleration is 2.4 m/s2 [E].

13. Example 2 Richard reduces his velocity from 15 m/s [forward] to 12 m/s [forward] in 4.0 s. What is his acceleration?

14. Example 2 Richard reduces his velocity from 15 m/s [forward] to 12 m/s [forward] in 4.0 s. What is his acceleration?

15. Example 2 Richard reduces his velocity from 15 m/s [forward] to 12 m/s [forward] in 4.0 s. What is his acceleration?

16. Example 2 Richard reduces his velocity from 15 m/s [forward] to 12 m/s [forward] in 4.0 s. What is his acceleration? His acceleration is 0.75 m/s2 [backward].

17. Rearranging the Equation The equation that represents the definition of acceleration may be rearranged to solve for any of the other variables, e.g. (solving for v2)

18. Rearranging the Equation The equation that represents the definition of acceleration may be rearranged to solve for any of the other variables, e.g.

19. Rearranging the Equation The equation that represents the definition of acceleration may be rearranged to solve for any of the other variables, e.g.

20. Rearranging the Equation The equation that represents the definition of acceleration may be rearranged to solve for any of the other variables, e.g.

21. Rearranging the Equation The equation that represents the definition of acceleration may be rearranged to solve for any of the other variables, e.g.

22. Rearranging the Equation The equation that represents the definition of acceleration may be rearranged to solve for any of the other variables, e.g.

23. Example 3 A ball is travelling at 12 m/s [up] and being accelerated at 9.8 m/s2 [down]. What is its velocity after 2.0 s?

24. Example 3 A ball is travelling at 12 m/s [up] and being accelerated at 9.8 m/s2 [down]. What is its velocity after 2.0 s?

25. Example 3 A ball is travelling at 12 m/s [up] and being accelerated at 9.8 m/s2 [down]. What is its velocity after 2.0 s?

26. Example 3 A ball is travelling at 12 m/s [up] and being accelerated at 9.8 m/s2 [down]. What is its velocity after 2.0 s? Its velocity is 7.6 m/s [down].

27. More Practice Playing with the Ticker Timers and Acceleration Graphing Acceleration