Final Velocity Calculator

About this calculator

This calculator applies the first two equations of uniformly accelerated motion: v = u + a·t for final velocity, and s = u·t + ½·a·t² for distance travelled, where u is initial velocity, a is constant acceleration, and t is elapsed time. Both come directly from integrating a constant acceleration over time, and they're the backbone of classical kinematics whenever acceleration doesn't change during the motion.

Physics students use them to solve free-fall, braking-distance, and projectile-launch problems, while automotive and aerospace engineers use the same equations to estimate stopping distances, acceleration test results, and launch trajectories. Anywhere motion can be treated as constant acceleration over a known time interval — a car merging onto a highway, a rocket in its first seconds of ascent — this pair of equations gives the answer without needing calculus at solve time.