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-2
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a radio controlled car rolls 10 m south, then reverses direction and rolls 8 m north. the car has traveled a distance of 18 m and has a displacement of ___ m south.

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 Mar 1, 2019
 #1
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Think of south as negative and north as positve, and since it's distance, you're answer is going to be the absolute value. It goes to -10, then add 8. It's -2, which means 2 miles south. 

 Mar 1, 2019

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