Kinematics and forces

Friction

f = μN

f friction force, μ coefficient of friction (static or kinetic), N normal force

Watch forOn a flat surface with no vertical forces besides gravity, N = mg.

Apply it · 2 questions

  1. Maximum speed on a flat curveMotion, forces, and energy · set 1 · hard
  2. Newton's second law with kinetic frictionMotion, forces, and energy · set 2 · easy