Physics
Basic

Kinematics: v²

Velocity–displacement relation under constant acceleration.

Formula

v2=u2+2asv^2 = u^2 + 2as

Variables

uInitial velocity
aAcceleration
sDisplacement

Example

From rest, a = 2 m/s² over 9 m: v² = 0 + 2·2·9 = 36, so v = 6 m/s.

Did You Know?

This equation lets you find final speed without ever knowing the time — handy for braking-distance problems.

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