$\"\"$

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1 mile = 5280 feet and 1 hour = 3600 seconds.

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20 mi/hour changes to feet per second. $\"\"$

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= $\"\"$

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= $\"\"$

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= $\"\"$ (Multiply: $\"\"$ )

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$\"\"$ (Divide: $\"\"$ ) $\"\"$

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$\"\"$ $\"\"$ .