# Physics

A delivery truck travels 20 blocks north, 15 blocks east and 18 blocks south. What is its final displacement from the origin? Assume the blocks are equal length.

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1. It is 53 blocks. (supposing that's what you meant!)

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2. Displacement=sqrt{(20-18)^2 +15^2}=15.13 m

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3. I like the 15.13, but where did you come up with meters? :-)

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