*69. A bus makes a trip according to the position–time graph shown in the illustration. What is the average acceleration (in km/h2) of the bus for the entire 3.5-h period shown in the graph?

w0089

 

Average acceleration is found from

For the whole trip  and .    the whole trip.  We will use

To find  and .

 

 

 

 

Answers will vary some depending on estimates chosen from the graph which has a fairly low resolution.

 

 

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This page last updated on January 11, 2020