Question

3) A person walking at 3.4 mph; convert to ft/s

Answer 1

Data:

3.4 mph (meters per hour)

To turn a measure into another unit of measure you can use factors as follow:

Knowing that 1 meter is 3.2808ft:

$\frac{3.4m}{h}\cdot\frac{3.2808ft}{1m}=\frac{11.15472ft}{h}$

1hour is 60min:

$\frac{11.15472ft}{h}\cdot\frac{1h}{60\min}=\frac{0.185912ft}{\min }$

1min is 60s:

$\frac{0.185912ft}{\min}\cdot\frac{1\min}{60s}=\frac{0.00309ft}{s}=3.09x10^{-3}\frac{ft}{s}$Then, 3.4mph is equal to 0.0309ft/s (3.09x10^-3 ft/s)