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Get Full Access to University Physics - 13 Edition - Chapter 1 - Problem 8e
Get Full Access to University Physics - 13 Edition - Chapter 1 - Problem 8e

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# While driving in an exotic foreign land, you see a speed ISBN: 9780321675460 31

## Solution for problem 8E Chapter 1

University Physics | 13th Edition

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Problem 8E

While driving in an exotic foreign land, you see a speed limit sign that reads 180,000 furlongs per fortnight. How many miles per hour is this? (One furlong is mile, and a fortnight is 14 days. A furlong originally referred to the length of a plowed furrow.)

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Solution 8E STEP 1: The speed limit is 180000 furlongs/fortnight. We know that 1 furlong is 8 miles. So, 180000 furlongs will be equal to, 180000 × 8 = 1440000 miles. Again we know that 1 fortnight is equal to 14 days. As 1 day = 24 hrs, 14 days = 24 × 14 = 336 hrs. STEP 2: So, the speed is, speed = distance / time = 1440000 miles / 336 hrs = 4285.7 mph. CONCLUSION: So, the speed in miles per hour is, 4285.7 mph.

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