Find acceleration from initial speed, final speed and time, or the final speed or time from the acceleration, with the distance covered and g-force.
Last updated: November 8, 2026
Equations for constant acceleration
Acceleration is the change in velocity per unit of time, measured in m/s². With constant acceleration: • a = (v − v₀) ÷ t • v = v₀ + a × t • t = (v − v₀) ÷ a • Distance: s = (v₀ + v) ÷ 2 × t Example: a car going from standstill to 30 m/s (67 mph) in 10 seconds accelerates at (30 − 0) ÷ 10 = 3 m/s², covering (0 + 30) ÷ 2 × 10 = 150 m. 3 m/s² is about 0.31 g. If the final speed is below the initial speed, the acceleration is negative: the object is slowing down. The equations assume the acceleration stays constant.
Common questions about acceleration
a = (final velocity − initial velocity) ÷ time. With speeds in m/s and time in seconds, the result is in m/s².
Other tools you may find useful
Enter 0 from standstill.
60 mph ≈ 26.8 m/s.
In seconds.