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:

`(3.4m)/(h)\cdot(3.2808ft)/(1m)=(11.15472ft)/(h)`

1hour is 60min:

`(11.15472ft)/(h)\cdot(1h)/(60\min)=(0.185912ft)/(\min )`

1min is 60s:

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