Acceleration, Time, and Initial Speed to Final Speed – v = v0 + a·t

Final speed v (m/s)
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Using v = v₀ + a × t
Enter acceleration and time to calculate the final speed.

Final Speed from Acceleration and Time

This tool computes the final speed of straight‑line motion under constant acceleration using the initial speed, acceleration, and elapsed time in SI units.

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Formula: v = v₀ + a × t

Where v is final speed (m/s), v₀ is initial speed (m/s), a is acceleration (m/s²), and t is time (s).

  • Use SI units: a in m/s², t in seconds, v and v₀ in m/s.
  • Time must be ≥ 0. Acceleration can be positive (speeding up) or negative (slowing down).
  • Valid for uniform (constant) acceleration along a straight path.
Example

Given a = 2.5 m/s², t = 4 s, v₀ = 0 m/s:

v = 0 + 2.5 × 4 = 10 m/s.