AP®︎ Physics 1: Topic 1.4 Practice Test
Prepare for your quiz, test, or the AP exam with focused practice questions on Topic 1.4 of AP Physics 1 – Reference Frames and Relative Motion.
Questions List
Topic 1.4
Question 1 Easy
Which row gives the velocity of a tree beside the track and the velocity of another passenger seated across the aisle, both as measured by the first passenger?
| Tree | Seated passenger across the aisle |
|---|---|
| east |
| Tree | Seated passenger across the aisle |
|---|---|
| west |
| Tree | Seated passenger across the aisle |
|---|---|
| east |
| Tree | Seated passenger across the aisle |
|---|---|
| west | east |
What You’re Being Tested On:
Explore the learning objectives taken directly from the College Board’s AP® Physics 1 Curriculum. Ensure you’re prepared for the exact topics covered on the AP® exam, in-class tests, and quizzes, and gain confidence in your mastery of the material.

Topic 1.4: Reference Frames and Relative Motion
Boundary Statements official exam scope notes
- Unless otherwise stated, the frame of reference of any problem may be assumed to be inertial. Adding or subtracting vectors to find relative velocities is restricted to motion along one dimension for AP Physics 1.
Learning Objective: 1.4.A
Describe the reference frame of a given observer.
Essential Knowledge: 1.4.A.1
The choice of reference frame will determine the direction and magnitude of quantities measured by an observer in that reference frame.
Learning Objective: 1.4.B
Describe the motion of objects as measured by observers in different inertial reference frames.
Essential Knowledge: 1.4.B.1
Measurements from a given reference frame may be converted to measurements from another reference frame.
Essential Knowledge: 1.4.B.2
The observed velocity of an object results from the combination of the object’s velocity and the velocity of the observer’s reference frame.
Essential Knowledge: 1.4.B.2.i
Combining the motion of an object and the motion of an observer in a given reference frame involves the addition or subtraction of vectors.
Essential Knowledge: 1.4.B.2.ii
The acceleration of any object is the same as measured from all inertial reference frames.