Free-Fall Impact Speed
Conservation of energy relates a drop from rest to the ideal final speed.
Free-Fall Impact Speed
Motion · 2 inputs
How to use this calculator
- Enter drop height in m.
- Enter gravity in m/s².
- Select Calculate and keep the output unit with the answer.
Before you use the answer
Choose a system boundary and a positive direction before entering measured values. Introductory equations deliberately leave out some real-world effects. If the setup has changing acceleration, drag, losses or nonuniform properties, first decide whether the simplified model is a useful approximation.
This idealized estimate ignores drag and should not be used to plan hazardous drops.
Does it save my inputs?
No calculation history is stored by this website. The calculator works locally in your browser. See the privacy policy for hosting and contact details.
Why might a result be approximate?
Measurement uncertainty, ideal-model assumptions and floating-point rounding can all matter. Displaying more digits does not improve the original measurement.
Related calculations
Projectile Range
The ideal horizontal range depends on launch speed and elevation angle when landing height equals launch height.
Open calculator ↗Projectile Maximum Height
Only the vertical component of launch velocity determines height above the launch point in an ideal trajectory.
Open calculator ↗Projectile Flight Time
A symmetric ideal trajectory spends equal time rising and falling to its original elevation.
Open calculator ↗