The Best AP Physics 1
Review 2026 | Study Guide,
Practice Questions,
Answers, Rationales &
Exam Review | Complete
Ethics Study Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
,acceleration, a The rate of change in velocity; the change in velocity over time.
acceleration due to gravity Acceleration of an object as a result of gravity.
average acceleration The change in velocity divided by the time over which it changes.
average velocity Displacement divided by time over which displacement occurs.
deceleration Acceleration in the direction opposite to velocity; acceleration that results in a
decrease in velocity.
dependent variable The variable that is being measured; usually plotted along the y-axis.
displacement, Δx The change in position of an object.
distance, d The magnitude of displacement between two positions.
distance traveled The total length of the path traveled between two positions.
elapsed time The difference between the ending time and beginning time.
free-fall The state of movement that results from gravitational force only.
independent variable The variable that the dependent variable is measured with respect to; usually
plotted along the x-axis.
, instantaneous acceleration Acceleration at a specific point in time.
instantaneous speed Magnitude of the instantaneous velocity.
intantaneous velocity Velocity at a specific instant, or the average velocity over an infinitesimal time
interval.
kinematics The study of motion without considering its causes.
model A simplified description that contains only those elements necessary to describe the
physics of a physical situation.
position, x The location of an object at a particular time.
scalar A quantity that is described by magnitude; but not direction.
slope The difference in y-value the difference in x-value of two points on a straight line.
time Change, or the interval over which change occurs.
vector A quantity that is described by both magnitude and direction.
y-intercept The y-value when x=0, or when the graph crosses the y-axis.
- Δx=(v0+v/2)t The 4 kinematics equations (with constant acceleration):
- v=v0+at
- Δx=v0t+1/2at^2
- v^2=v0^2+2aΔx
Review 2026 | Study Guide,
Practice Questions,
Answers, Rationales &
Exam Review | Complete
Ethics Study Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
,acceleration, a The rate of change in velocity; the change in velocity over time.
acceleration due to gravity Acceleration of an object as a result of gravity.
average acceleration The change in velocity divided by the time over which it changes.
average velocity Displacement divided by time over which displacement occurs.
deceleration Acceleration in the direction opposite to velocity; acceleration that results in a
decrease in velocity.
dependent variable The variable that is being measured; usually plotted along the y-axis.
displacement, Δx The change in position of an object.
distance, d The magnitude of displacement between two positions.
distance traveled The total length of the path traveled between two positions.
elapsed time The difference between the ending time and beginning time.
free-fall The state of movement that results from gravitational force only.
independent variable The variable that the dependent variable is measured with respect to; usually
plotted along the x-axis.
, instantaneous acceleration Acceleration at a specific point in time.
instantaneous speed Magnitude of the instantaneous velocity.
intantaneous velocity Velocity at a specific instant, or the average velocity over an infinitesimal time
interval.
kinematics The study of motion without considering its causes.
model A simplified description that contains only those elements necessary to describe the
physics of a physical situation.
position, x The location of an object at a particular time.
scalar A quantity that is described by magnitude; but not direction.
slope The difference in y-value the difference in x-value of two points on a straight line.
time Change, or the interval over which change occurs.
vector A quantity that is described by both magnitude and direction.
y-intercept The y-value when x=0, or when the graph crosses the y-axis.
- Δx=(v0+v/2)t The 4 kinematics equations (with constant acceleration):
- v=v0+at
- Δx=v0t+1/2at^2
- v^2=v0^2+2aΔx
