Mechanics & Motion Tools

Gravity does two jobs at once, and keeping them apart is the whole trick: sideways a projectile just drifts along, while downwards it picks up speed every second it stays up. Projectile Motion Calculator solves both halves together and draws the arc, returning the range, the apex, the seconds aloft and the impact speed from a launch speed, an angle and a starting height. It also names the angle that would have gone furthest, which is 45 degrees only when the throw begins at ground level.

Motor Torque Calculator is listed here as well, because a turning shaft is a mechanics problem before it is an electrical one. Force, momentum, friction, stress and strain, beam deflection, buckling, gear ratios and spring rates are queued behind them.