1. What is acceleration Acceleration  is the rate at which velocity changes over time. An Object will accelerate if its speed, direction of motion or both change.

2. Acceleration

3. Acceleration of a car

4. Acceleration of object being Thrown and Falling

5. Acceleration Data Graphed!

6. Formula for Acceleration Acceleration = (Velocity (final) – Velocity (Initial) ) time of change Units for acceleration are m/s/s or m/s 2

7. Acceration Example In 1970, Don “Big Daddy” Garlits set what was then the world record for drag racing. He started at rest and accelerated at 16.5 m/s 2 for 6.5 s. What was Garlits’s final speed? v f = (16.5 m/s 2 x 6.5 s) +0 m/s v f =110 m/s

8. Acceration Example 2 A child sleds down a steep, snow-covered hill with an acceleration of 2.82 m/s 2. If her initial speed is 0.0 m/s and her final speed is 15.5 m/s, how long does it take her to travel from the top of the hill to the bottom? t = (V f -V i )/a

9. Acceration Example #2 An automobile manufacturer claims that its latest model can “go from 0 to 90” in 7.5 s. If the “90” refers to 90.0 km/h (or 25.0 m/s), calculate the automobile’s acceleration in m/s 2. Acc =  v/t = (v f – v i )/t Acc = (25.0 m/s - 0.0 m/s)/7.5 s Acc = 3.3 m/s 2

10. Acceleration Equations