Velocity, Average Velocity and Displacement Calculator
Works out displacement and average velocity along a line.
Average velocity
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Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
Displacement —
Average speed —
Reading this —
The formula
displacement = end position − start position average velocity = displacement ÷ time average speed = path length ÷ time
Velocity has a direction and only cares where you ended up. Speed counts every metre of the route.
What to watch out for
For velocity under constant acceleration, the average is also (u + v) ÷ 2, which the SUVAT calculator shows.
Frequently Asked Questions
What is the difference between distance and displacement?
Distance is the length of the path. Displacement is the straight-line change in position, with a direction.
What is the average velocity of a 400 m lap in 80 s?
Zero, as you finish where you began. Average speed is 5 m/s.