AP Physics 1 — Dynamics Equation Finder AP Physics 1 — Dynamics Select the variables you know. Equations will show missing variables or indicate all variables are known. Known Variables F — Net force m — Mass a — Acceleration Fg — Weight / gravitational force FN — Normal force μ — Coefficient of friction k — Spring constant Δx — Spring displacement W — Work d — Distance (work) θ — Angle K — Kinetic energy Ug — Gravitational potential energy J — Impulse p — Momentum Δp — Change in momentum Favg — Average force t — Time g — Gravitational acceleration Find Equations Possible Equations