Question

Change a speed of 72.4 miles per hour to its equvalent in metres per second. (Round your answer to one decimal place)

Answer 1

Let's convert miles per hour to metres per second:

$$v = (72.4 \ \dfrac{mi}{h}) \cdot (\dfrac{1609 \ m}{1 \ mi}) \cdot (\dfrac{1 \ h}{3600 \ s}) = 32.4 \ \dfrac{m}{s}.$$

Answer:

$v = 32.4 \ \dfrac{m}{s}.$