Mary walked north from her home to Sheilas home, which is 4.0 kilometers away. Then she turned right and walked another 3.0 kilometers to the supermarket, which is 5.0 kilometers from her own home. She walked the total distance in 1.5 hours. What were her average speed and average velocity?
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Answer:
average speed is 4.0 + 3.0+ 5.0 = 12.0 / 1.5
12.0/1.5
= 8 s
Average velocity = 1.5 +0/2= 0.75
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