AP® Physics 1: Algebra-Based

Flashcards

243 cards with the terms and ideas you need to know cold. The ones you find hard come back sooner.

Multiple choice practice

499 exam-style questions, timed like the real exam, with every answer explained.

Practice exam

The whole multiple choice section: 42 questions in 1 hour 25 minutes, weighted by unit like the real exam. A fresh mix every time.

Must-know sheet

The facts, rules and terms to know cold on exam day, on one page. Filter it by unit, or print it.

Free-response practice

24 free-response questions like the ones on the exam. Score your answer with the rubric and a model answer, or sign in for free AI scoring.

Kinematics

5 topics · 33 videos

• Vectors have direction, and in one dimension a sign shows it
• Velocity is how fast position changes; acceleration is how fast velocity changes
• Slopes and areas on motion graphs connect position, velocity and acceleration
• Motion looks different from different reference frames
• Two-dimensional motion splits into independent x and y parts

Force and Translational Dynamics

9 topics · 59 videos

• Every force comes from an interaction between two objects
• Free-body diagrams turn a situation into equations
• Net force, not any single force, sets the acceleration
• Forces come in equal and opposite pairs acting on different objects
• Moving in a circle takes a net force pointing toward the center

Work, Energy, and Power

5 topics · 33 videos

• Work is energy transferred by a force acting over a distance
• Net work on an object equals its change in kinetic energy
• Potential energy is stored in the arrangement of a system
• Energy is always conserved; your choice of system decides what counts as a transfer
• Power is the rate at which energy is transferred

Linear Momentum

4 topics · 27 videos

• Momentum (p = mv) is a vector in the direction of the velocity
• Impulse equals the change in momentum
• With no net external force, a system's total momentum stays constant
• Collisions conserve momentum but not always kinetic energy
• Stretching out a stop over more time means a smaller average force

Torque and Rotational Dynamics

6 topics · 40 videos

• Every linear quantity has a rotational partner: θ, ω and α
• Every point on a rigid object shares the same ω and α, but points farther from the axis move faster
• Torque depends on the force, where it acts and its angle: τ = rF sin θ
• Mass farther from the axis means more rotational inertia
• Net torque causes angular acceleration: α = τ_net / I

Energy and Momentum of Rotating Systems

6 topics · 39 videos

• A spinning object has kinetic energy even if its center stays still: K = ½Iω²
• A torque acting through an angle does work: W = τΔθ
• Angular momentum stays constant when there is no net external torque
• A rolling object's kinetic energy is part translational and part rotational
• Orbits obey conservation of energy and angular momentum

Oscillations

4 topics · 28 videos

• A restoring force proportional to displacement produces simple harmonic motion
• The period depends on mass and spring constant, or pendulum length and g, but not on amplitude
• Position, velocity and acceleration follow sine and cosine curves
• Speed is greatest at equilibrium; acceleration is greatest at the turning points
• Energy swaps between kinetic and potential, but the total stays constant

Fluids

4 topics · 27 videos

• Density is mass per volume, and ideal fluids can't be compressed and have no viscosity
• Pressure increases with depth: P = P₀ + ρgh
• The buoyant force equals the weight of the fluid an object displaces
• Fluid flows faster where a pipe is narrower: A₁v₁ = A₂v₂
• Bernoulli's equation is conservation of energy for a flowing fluid