# Question #34559

##### 1 Answer

Oct 9, 2016

#### Answer:

-.56g or the car is decelerating at .56g.

#### Explanation:

Acceleration is equal to the slope of a velocity vs. time graph or (change in velocity/change in time)

If you are only looking for the acceleration from t=5 to t=9:

1. Change in velocity:

2. Change in time: 4s

3. (Change in velocity)/(Change in time)=

4.

If you are looking for the average acceleration between t=0 to t=9:

1. Change in velocity:

2. Change in time: 9s

3. (Change in velocity)/(Change in time)=

4.