Respuesta :

gcantiga44

Answer:

c. 4 ft./ 1 sec.

Step-by-step explanation:

A unit rate always requires the last unit a numerical value of 1.

So c is the answer because it is 4 ft per 1 sec or 4 ft/sec (4 feet per second)

More examples are: mph, kmph, g/cm² and etc.

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