# Formula Free Fall Fall distance    Fall time

## Fall distance

Unit
Distance traveled by a body within the fall time $$t$$. In this distance-time law, it is assumed that the body starts to fall at the height $$y = 0$$ at the time $$t = 0$$, that is $$y(0) = 0$$.

## Fall time

Unit
Time during which the body fell, covering the distance $$y(t)$$.

## Gravitational acceleration

Unit
Gravitational acceleration is the acceleration near the surface of the earth. It has the value of $$9.8 \, \frac{\mathrm m}{\mathrm{s}^2}$$. On other planets (e.g. on Jupiter) this value is different.