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# You drive on Interstate 10 from San Antonio to Houston, half the time at 54 km/h

## Question

###### You drive on Interstate 10 from San Antonio to Houston, half the time at 54 km/h
You drive on Interstate 10 from San Antonio to Houston, half thetime at 54 km/h and the other half at90 km/h. On the way back you travelhalf the distance at 54 km/hand theother half at 90 km/h.(a) What is your average speed from San Antonioto Houston?
km/h

(b) What is your average speed from Houston back to SanAntonio?
km/h

(c) What is your average speed for the entire trip?
km/h

(d) What is your average velocity for the entire trip?
km/h

(e) Describe in words the graph x versus t for(a), assuming the motion is all in the positive xdirection.

(f) Describe how the average velocity can be found on a graph ofx versus t.

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