AP Calculus
AP Calculus FRQ – AVERAGE RATE OF CHANGE Name________________________
|x |2 |3 |5 |8 |13 |
|f(x) |1 |4 |-2 |3 |6 |
1. Let f be a function that is twice differentiable for all
real numbers. The table above gives values of f for
selected points in the closed interval [pic].
Calculate the average rate of change of f(x)
on the interval [pic].
Explain the meaning of your answer in the context of this problem.
t
(seconds) |0 |10 |20 |30 |40 |50 |60 |70 |80 | |v(t)
(feet per sec) |5 |14 |22 |29 |35 |40 |44 |47 |49 | |
2. Rocket A has positive velocity v(t) after being launched upward from an initial height of 0 feet at time
t = 0 seconds. The velocity of the rocket is recorded for
selected values of t over the interval [pic]seconds, as shown in the table above.
Find the average acceleration of rocket A over the time interval [pic]seconds. Indicate units of measure.
Explain the meaning of your answer in the context of this problem.
NEEDS GRAPH!
3. A car is traveling on a straight road. For [pic]seconds, the car’s velocity v(t), in meters per
second, is modeled by the piecewise-linear function
defined by the graph above.
Find the average rate of change of v over the interval
[pic].
Explain the meaning of your answer in the context of this problem.
4. Traffic flow is defined as the rate at which cars pass through an intersection, measured in cars per minute.The traffic flow at a particular intersection is modeled by th function F defined by
[pic] for [pic],
where F(t) is measured in cars per minute and t is measured in minutes.
What is the average rate of change of the traffic flow over the time interval [pic]? Indicate units of measure.
Explain the meaning of your answer in the context of this problem.
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