From Calgary, Sandy travels 10km north for 15 minutes to the mall, and stops for lunch for 45min. After lunch it takes Sandy another 15 minutes to drive towards the nearest library at 9.0km away north of the mall. When she reached the library, she realized that she had forgotten her books. And travels 30 minutes to home south, 19km away. What is her average velocity? What is her average speed?
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From Calgary, Sandy travels 10km north for 15 minutes to the mall, and stops for lunch for 45min. Af...
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