Displacement from Average Velocity
Also known as fourth kinematic equation · SUVAT s = ½(u+v)t
Enter your known values, leave one input blank, and solves for the missing one. Try different units for next level excitement!
Learning zone
Under constant acceleration, speed climbs (or falls) in a straight line, so distance covered is just the average of the starting and ending speeds multiplied by the time. A train easing from 30 m/s down to 10 m/s over 20 s travels (30 + 10)/2 × 20 = 400 m. The shortcut fails for non-uniform acceleration, where the simple two-point average no longer represents the whole trip.
Displacement from Average Velocity
Where
- = Displacement
- = Initial velocity
- = Final velocity
- = Time
Missing one of these? Work it out first, then come back
- Displacement — Displacement (Uniform Acceleration), Velocity-Displacement Relation (v² = v₀² + 2ad)
- Initial velocity — Final Velocity (Uniform Acceleration), Displacement (Uniform Acceleration)
- Final velocity — Final Velocity (Uniform Acceleration), Velocity-Displacement Relation (v² = v₀² + 2ad)
- Time — Speed, Distance & Time, Final Velocity (Uniform Acceleration)