Physics 1 · Reference
Equation index
On this page 3 sections
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Key equations organized by topic. See individual topic files for full context. This page lists the Physics 1 equations.
The college version
Topic 1 — Kinematics
| Equation | Name |
|---|---|
| vavg = ΔxΔt | Average velocity |
| aavg = ΔvΔt | Average acceleration |
| vf = vi + at | Kinematic (no Δx) |
| Δx = vi t + 12at2 | Kinematic (no vf) |
| vf2 = vi2 + 2aΔx | Kinematic (no t) |
| R = v02sin(2θ)g | Projectile range |
| ac = v2r | Centripetal acceleration |
Topic 2 — Dynamics
| Equation | Name |
|---|---|
| ∑F = ma | Newton's Second Law |
| fs ≤ μs N | Static friction |
| fk = μk N | Kinetic friction |
| a = m1-m2m1+m2g | Atwood acceleration |
Topic 3 — Work, Energy, Power
| Equation | Name |
|---|---|
| W = Fdcosθ | Work |
| K = 12mv2 | Kinetic energy |
| Ug = mgh | Gravitational potential energy |
| Us = 12kx2 | Elastic potential energy |
| Wnet = ΔK | Work-energy theorem |
| P = W/Δt = Fvcosθ | Power |
Topic 4 — Momentum and Collisions
| Equation | Name |
|---|---|
| p = mv | Momentum |
| J = FΔt = Δp | Impulse-momentum |
| ∑pi = ∑pf | Conservation of momentum |
Topic 5 — Rotational Motion
| Equation | Name |
|---|---|
| vt = rω | Tangential velocity |
| τ= rFsinθ | Torque |
| ∑τ= Iα | Rotational 2nd Law |
| Krot = 12Iω2 | Rotational KE |
| L = Iω | Angular momentum |
Topic 6 — Equilibrium, Elasticity, Gravitation
| Equation | Name |
|---|---|
| Fg = Gm1m2r2 | Universal gravitation |
| U = -Gm1m2r | Gravitational PE |
| vorb = GM/r | Orbital speed |
| vesc = 2GM/r | Escape velocity |
Topic 7 — Fluid Mechanics
| Equation | Name |
|---|---|
| P = P0 + ρgh | Pressure with depth |
| FB = ρf Vdispg | Archimedes' principle |
| A1v1 = A2v2 | Continuity equation |
| P + 12ρv2 + ρgh = const | Bernoulli's equation |
Topic 8 — Oscillations and Waves
| Equation | Name |
|---|---|
| T = 2πm/k | Mass-spring period |
| T = 2πL/g | Pendulum period |
| v = fλ | Wave speed |
| fn = n f1 | Harmonics |
Topic 9 — Thermodynamics
| Equation | Name |
|---|---|
| Q = mcΔT | Heat |
| PV = nRT | Ideal gas law |
| ΔU = Q - W | First Law |
| e = 1 - QC/QH | Engine efficiency |
| eCarnot = 1 - TC/TH | Carnot efficiency |
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