Physics calculators
Every calculator here shows its steps and sits next to a short explainer and a worked example, using g = 9.8 m/s² exactly like the AP equation sheet. The number gets your homework done; the steps get you the exam points.
Centripetal Force & Acceleration CalculatorCompute centripetal acceleration and force with ac = v^2/r and Fc = mv^2/r, from speed or period. Worked examples plus the real forces behind Fc.Coulomb's Law Calculator (Electric Force)Compute the electric force between two charges with Coulomb's law, F = k q1 q2 / r^2, using k = 9.0e9. Handles microcoulombs, with AP-style worked examples.Friction Calculator (Static, Kinetic, Solve for mu)Compute kinetic friction, maximum static friction, or solve for mu with F = mu N. Includes the AP Physics 1 inequality, worked examples, and common traps.Kinematics Calculator: Solve for Any VariableEnter any three of initial velocity, final velocity, acceleration, time, and displacement. It solves the AP constant-acceleration equations for the rest.Kinetic & Potential Energy Calculator (AP Physics 1)Free kinetic and potential energy calculator for AP Physics 1. Computes K, delta Ug, and spring energy in joules, with worked examples and unit tips.Momentum & Collision Calculator (Final Velocity)Free momentum and collision calculator: p = mv, impulse, perfectly inelastic and 1D elastic final velocities, with the conservation setup for each.Net Force Calculator (F = ma, Any Variable)Solve F = ma for force, mass, or acceleration, and add two force components. Covers Newton's second law and how to find the net force on a system.Normal Force Calculator (Flat & Inclined Surfaces)Find the normal force on flat ground, on an incline, or with an extra vertical force. Formulas, worked examples, and why N is not always mg.Ohm's Law Calculator + Series/Parallel ResistanceSolve for voltage, current, resistance, or power from any two values, plus series and parallel equivalent resistance with worked AP-style examples.Projectile Motion Calculator (Range, Height, Time)Free projectile motion calculator for time of flight, range, and max height from launch speed, angle, and height. Formulas plus AP Physics 1 worked examples.Torque Calculator: rF sin theta and Lever ArmCompute torque with tau = rF sin theta and find the lever arm r sin theta. Includes sign conventions, equilibrium, and AP Physics 1 Unit 5 worked examples.Work and Power Calculator (W = Fd cos θ, P = W/t)Compute work with W = Fd cos θ, average power P = W/t, and instantaneous power P = Fv cos θ. Covers the sign of work, the watt, and AP Physics 1 Unit 3.