Measure displacement over time
Use the formula velocity = displacement ÷ time
Include direction with the value
Use consistent units, such as m/s
Find the slope of a position-time graph
Use initial and final position to calculate change in position
Divide change in position by elapsed time
For instantaneous velocity, use the derivative of position with respect to time
For average velocity, use total displacement divided by total time
Keep the sign of the direction when reporting velocity