AP Physics 1 MCQ Practice by Topic 2027
Choose a topic to open its full 42-question bank. The topic links from lesson pages land directly on the matching bank, so a student reviewing Topic 1.3 is not sent to a short generic diagnostic.
How much AP Physics 1 MCQ practice is available?
There are 42 original multiple-choice questions for each of the 43 official AP Physics 1 topics, giving 1,806 topic MCQs with answers, explanations and lesson routing.
- 43 topic banks.
- 42 MCQs per topic.
- 1,806 topic MCQs total.
Choose the exact AP Physics 1 topic
All 43 official topics are available. Each MCQ bank contains 42 original questions and each FRQ bank contains four prompts aligned to the four current free-response task types.
Reference Frames & Relative Motion Practice
All questions are original. Check each answer for immediate feedback and explanation, then use the lesson link inside the explanation when a concept needs repair.
A train moves +12 m/s relative to ground. A passenger walks +1 m/s relative to the train. What is the passenger's ground-frame velocity?
Correct answer: A. Same-direction signed velocities add: 12+1=13 m/s.
A train moves +14 m/s relative to ground. A passenger walks +2 m/s relative to the train. What is the passenger's ground-frame velocity?
Correct answer: A. Same-direction signed velocities add: 14+2=16 m/s.
A train moves +16 m/s relative to ground. A passenger walks +3 m/s relative to the train. What is the passenger's ground-frame velocity?
Correct answer: A. Same-direction signed velocities add: 16+3=19 m/s.
A train moves +18 m/s relative to ground. A passenger walks +4 m/s relative to the train. What is the passenger's ground-frame velocity?
Correct answer: A. Same-direction signed velocities add: 18+4=22 m/s.
A train moves +20 m/s relative to ground. A passenger walks +5 m/s relative to the train. What is the passenger's ground-frame velocity?
Correct answer: A. Same-direction signed velocities add: 20+5=25 m/s.
A train moves +22 m/s relative to ground. A passenger walks +6 m/s relative to the train. What is the passenger's ground-frame velocity?
Correct answer: A. Same-direction signed velocities add: 22+6=28 m/s.
A train moves +18 m/s. A passenger walks toward the rear at 2 m/s relative to the train. What is the passenger's ground-frame velocity?
Correct answer: A. Rearward walking is −2 m/s in this axis, so 18+(2 backward) = +16 m/s.
A train moves +20 m/s. A passenger walks toward the rear at 3 m/s relative to the train. What is the passenger's ground-frame velocity?
Correct answer: A. Rearward walking is −3 m/s in this axis, so 20+(3 backward) = +17 m/s.
A train moves +22 m/s. A passenger walks toward the rear at 4 m/s relative to the train. What is the passenger's ground-frame velocity?
Correct answer: A. Rearward walking is −4 m/s in this axis, so 22+(4 backward) = +18 m/s.
A train moves +24 m/s. A passenger walks toward the rear at 5 m/s relative to the train. What is the passenger's ground-frame velocity?
Correct answer: A. Rearward walking is −5 m/s in this axis, so 24+(5 backward) = +19 m/s.
A train moves +26 m/s. A passenger walks toward the rear at 6 m/s relative to the train. What is the passenger's ground-frame velocity?
Correct answer: A. Rearward walking is −6 m/s in this axis, so 26+(6 backward) = +20 m/s.
A train moves +28 m/s. A passenger walks toward the rear at 7 m/s relative to the train. What is the passenger's ground-frame velocity?
Correct answer: A. Rearward walking is −7 m/s in this axis, so 28+(7 backward) = +21 m/s.
Car A moves +24 m/s and car B moves +10 m/s. What is v_A/B?
Correct answer: A. For velocities measured in the same ground frame, v_A/B = v_A/G − v_B/G.
Car A moves +26 m/s and car B moves +11 m/s. What is v_A/B?
Correct answer: A. For velocities measured in the same ground frame, v_A/B = v_A/G − v_B/G.
Car A moves +28 m/s and car B moves +12 m/s. What is v_A/B?
Correct answer: A. For velocities measured in the same ground frame, v_A/B = v_A/G − v_B/G.
Car A moves +30 m/s and car B moves +13 m/s. What is v_A/B?
Correct answer: A. For velocities measured in the same ground frame, v_A/B = v_A/G − v_B/G.
Car A moves +32 m/s and car B moves +14 m/s. What is v_A/B?
Correct answer: A. For velocities measured in the same ground frame, v_A/B = v_A/G − v_B/G.
Car A moves +34 m/s and car B moves +15 m/s. What is v_A/B?
Correct answer: A. For velocities measured in the same ground frame, v_A/B = v_A/G − v_B/G.
If v_A/B = +5 m/s, what is v_B/A?
Correct answer: B. Reversing the order of the relative-velocity subscripts reverses the sign.
If v_A/B = +6 m/s, what is v_B/A?
Correct answer: B. Reversing the order of the relative-velocity subscripts reverses the sign.
If v_A/B = +7 m/s, what is v_B/A?
Correct answer: B. Reversing the order of the relative-velocity subscripts reverses the sign.
If v_A/B = +8 m/s, what is v_B/A?
Correct answer: B. Reversing the order of the relative-velocity subscripts reverses the sign.
If v_A/B = +9 m/s, what is v_B/A?
Correct answer: B. Reversing the order of the relative-velocity subscripts reverses the sign.
If v_A/B = +10 m/s, what is v_B/A?
Correct answer: B. Reversing the order of the relative-velocity subscripts reverses the sign.
A cyclist and an observer both move at +8 m/s along a straight road. What velocity does the observer measure for the cyclist?
Correct answer: A. Their relative velocity is the difference of equal ground-frame velocities, so the cyclist is at rest in the observer frame.
A cyclist and an observer both move at +10 m/s along a straight road. What velocity does the observer measure for the cyclist?
Correct answer: A. Their relative velocity is the difference of equal ground-frame velocities, so the cyclist is at rest in the observer frame.
A cyclist and an observer both move at +12 m/s along a straight road. What velocity does the observer measure for the cyclist?
Correct answer: A. Their relative velocity is the difference of equal ground-frame velocities, so the cyclist is at rest in the observer frame.
A cyclist and an observer both move at +14 m/s along a straight road. What velocity does the observer measure for the cyclist?
Correct answer: A. Their relative velocity is the difference of equal ground-frame velocities, so the cyclist is at rest in the observer frame.
A cyclist and an observer both move at +16 m/s along a straight road. What velocity does the observer measure for the cyclist?
Correct answer: A. Their relative velocity is the difference of equal ground-frame velocities, so the cyclist is at rest in the observer frame.
A cyclist and an observer both move at +18 m/s along a straight road. What velocity does the observer measure for the cyclist?
Correct answer: A. Their relative velocity is the difference of equal ground-frame velocities, so the cyclist is at rest in the observer frame.
Two inertial observers move at constant velocity relative to each other. One measures an object's acceleration as +1 m/s². What acceleration does the other measure?
Correct answer: A. Acceleration is the same in inertial frames moving at constant velocity relative to one another.
Two inertial observers move at constant velocity relative to each other. One measures an object's acceleration as +2 m/s². What acceleration does the other measure?
Correct answer: A. Acceleration is the same in inertial frames moving at constant velocity relative to one another.
Two inertial observers move at constant velocity relative to each other. One measures an object's acceleration as +3 m/s². What acceleration does the other measure?
Correct answer: A. Acceleration is the same in inertial frames moving at constant velocity relative to one another.
Two inertial observers move at constant velocity relative to each other. One measures an object's acceleration as +4 m/s². What acceleration does the other measure?
Correct answer: A. Acceleration is the same in inertial frames moving at constant velocity relative to one another.
Two inertial observers move at constant velocity relative to each other. One measures an object's acceleration as +5 m/s². What acceleration does the other measure?
Correct answer: A. Acceleration is the same in inertial frames moving at constant velocity relative to one another.
Two inertial observers move at constant velocity relative to each other. One measures an object's acceleration as +6 m/s². What acceleration does the other measure?
Correct answer: A. Acceleration is the same in inertial frames moving at constant velocity relative to one another.
A passenger compares a walker’s velocity with the velocity seen from a train moving at constant speed. Unless stated otherwise, what reference-frame assumption is appropriate?
Correct answer: A. The reference frame may be assumed inertial unless otherwise specified; Topic 1.4 restricts relative-velocity vector addition/subtraction to one dimension.
Two cars compare velocities while both travel along a straight highway at steady speeds. Unless stated otherwise, what reference-frame assumption is appropriate?
Correct answer: A. The reference frame may be assumed inertial unless otherwise specified; Topic 1.4 restricts relative-velocity vector addition/subtraction to one dimension.
A cyclist measures another cyclist’s motion while the observer’s bicycle moves at constant velocity. Unless stated otherwise, what reference-frame assumption is appropriate?
Correct answer: A. The reference frame may be assumed inertial unless otherwise specified; Topic 1.4 restricts relative-velocity vector addition/subtraction to one dimension.
A student solves a one-dimensional boat-and-riverbank style relative-velocity analogy with a steadily moving reference frame. Unless stated otherwise, what reference-frame assumption is appropriate?
Correct answer: A. The reference frame may be assumed inertial unless otherwise specified; Topic 1.4 restricts relative-velocity vector addition/subtraction to one dimension.
An observer on a uniformly moving cart measures a rolling ball’s acceleration. Unless stated otherwise, what reference-frame assumption is appropriate?
Correct answer: A. The reference frame may be assumed inertial unless otherwise specified; Topic 1.4 restricts relative-velocity vector addition/subtraction to one dimension.
Two inertial laboratories move at constant velocity relative to one another and compare a cart’s motion. Unless stated otherwise, what reference-frame assumption is appropriate?
Correct answer: A. The reference frame may be assumed inertial unless otherwise specified; Topic 1.4 restricts relative-velocity vector addition/subtraction to one dimension.