Question

If a bullet travels at 423.0 m/s, what is its speed in miles per hour?

Answer 1

about 946.2 mph

Explanation:

You want the speed in mph of a bullet that travels 423.0 m/s.

Conversion

The conversion of units involves multiplying by fractions that cancel the units you have and leave the units you want. Each fraction has its numerator equal to its denominator.

`423.0\text{ m/s}*\frac{1\text{ mi}}{1609.344\text{ m}}*\frac{3600\text{ s}}{1\text{ h}}\approx\boxed{946.2\text{ mi/h}}`

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