Solve the problem.The distance D in feet that an object has fallen after t seconds is given by D(t) = 16t2. (i) Evaluate D(2) and D(3). (ii) Calculate the average rate of change of D from 2 to 3. Interpret the result.
A. (i) 64, 144
(ii) 16; the object's average speed from 2 to 3 seconds is 16 ft/sec.
B. (i) 32, 48
(ii) 80; the object's average speed from 2 to 3 seconds is 80 ft/sec.
C. (i) 32, 48
(ii) 16; the object's average speed from 2 to 3 seconds is 16 ft/sec.
D. (i) 64, 144
(ii) 80; the object's average speed from 2 to 3 seconds is 80 ft/sec.
Answer: D
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