select an appropriate unit from the choices below and connect the rate to that unit.
answer a - ft /s
answer b - mph
answer c - mm/s
answer d - km/s
question : A person walking at 3,4 mph
c and d would be very unwieldy. However, you do know (I hope) that 60 mph = 88 ft/s
That's probably a good conversion to use.
To connect the rate of a person walking at 3.4 mph to an appropriate unit from the choices given, we can select answer b - mph, which stands for miles per hour.
To connect the rate of a person walking to an appropriate unit from the choices given, we need to consider the given rate of "3.4 mph" (miles per hour).
The unit "ft/s" (feet per second) is a conversion unit used to measure speed or velocity. To determine if it is an appropriate unit, we need to convert the given rate into feet per second.
To do this, we need to know the conversion factor between miles and feet, as well as the conversion factor between hours and seconds.
1 mile = 5280 feet
1 hour = 3600 seconds
Using these conversion factors, we can convert the rate from miles per hour to feet per second:
(3.4 mph) x (5280 ft/1 mile) x (1 hour/3600 seconds) = (3.4 x 5280 ft/3600 seconds)
Simplifying further:
(3.4 x 5280 ft) / 3600 seconds = 4.99 ft/s (approximately)
So, the appropriate unit to connect the rate of a person walking "3.4 mph" is "ft/s" (answer a).