Unit vector has magnitude 1. Normalization finds unit vector by multiplying by reciprocal of magnitude. Standard unit vectors are i = (1,0) and j = (0,1). Any vector can be expressed as sum of horizontal and vertical unit vectors
Four main kinematics equations: Δx = (v₁+v₂)/2Δt, v = v₀+at, Δx = 1/2at² + v₀t, v² - v₀² = 2aΔx
Particle moving with acceleration a = (2t - 6) m/s² finds velocity at t = 6s and position at t = 11s. Particle moving right at 12 ft/s with acceleration 2 ft/s² finds position at t = 10s. Particle traveling with velocity v = (12 - 3t²) m/s finds acceleration at t = 4s. Particle moving with constant acceleration finds velocity at t = 4s