Question

One of the fastest recorded speeds of a turtle while swimming is 9 m/s. Approximately, what is this speed in kilometers per hour? [1 kilometer = 1,000 meters] [1 hour = 60 minutes = 3,600 seconds]

Answer 1

32.5 kilometers per hour

Answer 2

Answer: 32.4 km/h.

Step-by-step explanation:

This is a simple conversion of units, so we're going to use conversion factors. A conversion factor is used to change the units of a measured quantity without changing its value.

The unity bracket method of unit conversion consists of a fraction in which the denominator is equal to the numerator, but they are in different units; since the numerator and denominator are equal, the fraction is equal to one and it won't affect the value of the quantity. Here's how you do it:

$\frac{9m}{s} *\frac{1km}{1,000m} *\frac{3,600s}{1h} =32.4\frac{km}{h}$

As you can see, the seconds and meters cancel each other and you're left with km/h.