Question

How do you convert 46 feet per second to miles per hour?

Answer 1

Hint: We always have standard conversions that we need to know. For example while converting meter/second to kilometer/ hour we multiply the given value with $\dfrac{18}{5}$ . And when we want to convert kilometer/hour to meter/second we multiply the given value with $\dfrac{5}{18}$ . We need to know these conversions as some answers or exams only have one particular option. So in the same way , we have to multiply our 46 feet per second with a constant value in order to convert it to miles per hour . And that constant is 0.681818.

Complete step by step answer:
46 feet per second indicates that 46 feet is being covered in 1 second. From the hint, we can deduce that one foot per second is equivalent to 0.681818 miles per hour. So if we want to convert anything from feet per second to miles per hour we have to multiply the given value with 0.681818.So to convert 46 feet per second to miles per hour we have to multiple 46 with 0.681818.
$\Rightarrow 46\times 0.681818=31.363628$
So 46 feet per second is equal to 31.363628 miles per hour. 31.363628 miles per hour indicates that 31.363628 miles is being covered in an hour.
By the way 0.681818 is a constant. We have to multiply it to convert only feet per second to miles per second. We can’t change this value as it is deduced after scientific research.
$\therefore $ To convert 46 feet per second to miles per hour , we have to multiply it with 0.681818.

Note: We have to remember all these constants as these will not be mentioned in our exams. And sometimes the answers are expected in a particular unit. So it is advisable to remember these. And also be careful while multiplying.