Convert units using several conversion factors. If a car is traveling at a speed

Question

Convert units using several conversion factors. If a car is traveling at a speed of 28.0 m/s, is the driver exceeding the speed limit of 55.0 mi/h? Meters must be converted to miles and seconds to hours, using the standard conversion factors. Here, three factors will be used. Convert meters to miles. Convert seconds to hours The driver should slow down because he's exceeding the speed limit. Repeat the conversion, using the relationship 1.00 m/s = 2.24 mi/h. Why is the answer slightly different? (Select all that apply.) Using the conversion factor fails to keep extra digits until the final answer. 2.24 mi/h is not a correct conversion factor to three significant figures. The units are not the same. A different conversion factor from minutes to seconds is used in each case.

Explanation / Answer

If we make the conversion from 1m/s to mi/h

1 m/s * (1/1609) *(60)*(60) = 2.2374 mi/h

I think the answer should we just the first one using the conversion factor fails to keep extra digitis until the final answer.

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