Definite Integrals in Context (College Board AP® Calculus AB): Exam Questions

2 hours48 questions
1
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The acceleration, in feet per second per second, of a particle moving in a straight line is given by the function a(t)=exx32x. What is the average acceleration of the particle from time t=0 to time t=4?

  • 15.241 ft/sec2

  • 23.241 ft/sec2

  • 30.481 ft/sec2

  • 60.962 ft/sec2

2
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A particle moves along the x-axis with velocity given by v(t)=6t22t for time t0. If the particle starts at (0, 0), what is the position of the particle at time t=3?

  • 34

  • 45

  • 48

  • 63

3
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1 mark

What is the average value of y=sin xx25 on the closed interval [2, 1]?

  • 0.137

  • 0.137

  • 0.206

  • 0.412

4
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1 mark
A diagram of a park next to a highway. The park is rectangular with a horizontal length of 7 km and a vertical length of 3 km. The highway runs alongside the left hand vertical edge of the park.

A rectangular park is located beside a highway as shown in the figure above. A population of ducks lives in the park and at any point along a strip x meters from the the edge of the highway are f(x) ducks per square meter. Which of the following expressions gives the total population of ducks in the park?

  • 02f(x) dx

  • 602f(x) dx

  • 06f(x) dx

  • 206f(x) dx

5
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The water level in a tank is given by the function 0tr(t)dt where r(t)=2t39t2+3 for 0t6. During which of the following intervals is the water level increasing?

  • 0t0.621 and 4.423t6

  • 0.621t4.423

  • 3t6

  • 5.423t6

6
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The graph below gives the velocity, v, in ft/sec, of an object for 0t6, where t is the time in seconds. Of the following, which is the best estimate of the distance traveled by the object for 0t6?

Graph showing a curve with velocity v on the vertical axis and time t on the horizontal axis. Curve starts at v = 40, t = 0 and decreases to t=6, v=-140. Also passes through approximately t=2.8, v=0.
  • -170 ft

  • 280 ft

  • 480 ft

  • 540 ft

1
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A machine is filling a bottle of vinegar at a rate of r(t)=12.8e0.4t ounces per second, where t is measured in seconds. How many ounces of vinegar are put into the bottle from time t=0 to time t=8?

  • 0.522

  • 2.584

  • 12.800

  • 30.696

2
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A particle moves along the x-axis. The velocity of the particle at time t is 12t3t2. What is the total distance traveled by the particle from time t=0 to t=2?

  • 24

  • 16

  • 15

  • 12

3
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A particle moves along the x-axis. The velocity of the particle at time t is given by v(t), and the acceleration of the particle at time t is given by a(t). Which of the following gives the average velocity of the particle from time t=0 to time t=12?

  • v(12)v(0)12

  • 12012v(t) dt

  • 112012v(t) dt

  • 112012|v(t)| dt

4
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A particle moves along a line so that its acceleration for t0 is given by a(t)=t2+1t3+7. If the particle's velocity at t=0 is 12, what is the velocity of the particle at t=5?

  • 7.032

  • 13.119

  • 19.032

  • 25.119

5
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Line graph showing a cubic feet per minute flow rate over 10 minutes. The flow starts at 20, peaks near 55 at 5 minutes, then returns to 20 by 10 minutes.

The flow of natural gas, in cubic feet per minute, through a pipe is given by the graph shown above. Of the following, which best approximates the total number of cubic feet of natural gas that passed through the pipe during the 10 minutes shown on the graph?

  • 140

  • 290

  • 370

  • 500

6
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A particle with velocity at any time t given by v(t)=e2t moves in a straight line. How far does the particle move from t=0 to t=4?

  • 12(e81)

  • e81

  • 2(e81)

  • 12e8

7
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What is the average value of y for the part of the curve 4xx2 which is in the first quadrant?

  • 2

  • 83

  • 163

  • 323

8
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A cup of coffee, initially at a temperature of 200 degrees Fahrenheit (°F), is placed in a 60 °F room at time t=0 minutes. The temperature of the cup of coffee is changing at a rate of 50e0.2t degrees Fahrenheit per minute. To the nearest degree, what is the temperature of the cup of coffee at time t=3 minutes?

  • 87 °F

  • 113 °F

  • 147 °F

  • 173 °F

1
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On the closed interval [1, 5], which of the following could be the graph of a function g with the property that 1415g(x) dt=32 ?

  • A graph of a function that is a horizontal line going from (1, 2.5) to (5, 2.5).
  • A graph of a function that is a straight line going from (2, 3) to (5, 0).
  • A graph of a function that is made up of a straight line segment going from (1, 0) to (3, 3) and a second segment going from (3, 3) to (5, 0).
  • A graph of a function which is a smooth curve that starts at (1, 3) and goes down (3, 0) and back up to (5, 3).
2
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A particle moves along the x-axis so that at any time t>0, its acceleration is given by a(t)=ln (3t+2). If the velocity of the particle is 1.5 at time t=2, then the velocity of the particle at time t=4 is

  • 3.313

  • 4.419

  • 5.261

  • 6.761

3
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1 mark

An object traveling in a straight line has position x(t) at time t, where time is measured in seconds. If the velocity of the object is v(t)=2t2+t35 what is the distance traveled by the object in the first 18 seconds?

  • 3.733

  • 5.451

  • 20.183

  • 34.915

4
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1 mark

What is the average value of y=x·x213 on the interval [0, 3]?

  • 158

  • 458

  • 154

  • 454

5
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1 mark

Water is pumped into a tank at a rate of r(t)=x(53x34) gallons per minute, where t is the number of minutes since the pump was turned on. If the tank contained 70 gallons of water when the pump was turned on, how much water, to the nearest gallon, is in the tank after 81 minutes?

  • 56 gallons

  • 75 gallons

  • 324 gallons

  • 394 gallons