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The table shows the distance, in feet, that an object falls during the first 4 seconds after it is dropped from a height of 300 feet.

What is the object’s average speed during the time interval from 1 s to 3 s?

A.
40 ft./s

B.
43 ft./s

C.
48 ft./s

D.
64 ft./s

E.
80 ft./s

The table shows the distance in feet that an object falls during the first 4 seconds after it is dropped from a height of 300 feet What is the objects average s class=

Respuesta :

reinhard10158

Answer:

D. 64 ft/s

Step-by-step explanation:

the average speed expressed by the function d(t) is

(d(interval end) - d(interval begin))/(interval end - interval begin)

so, in our case here

(144 - 16)/(3 - 1) = 128/2 = 64 ft/s

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