Velocity = displacement ÷ time
Use the formula v = Δx / Δt
Measure displacement in meters
Measure time in seconds
State direction with the value
Use units of m/s
For average velocity, use total displacement over total time
For instantaneous velocity, find the velocity at a specific moment
From a position-time graph, velocity = slope of the graph
If acceleration is constant, use v = u + at
If final and initial velocities are known, use v = (v_f + v_i) / 2 for average velocity under constant acceleration
If distance is given instead of displacement, convert to displacement first
Include positive or negative sign based on direction