Vertical Motion models
Falling Object Model
When an object is dropped, the speed with which it falls continues to increase. Ignoring air resistance, its height h can be approximated by the falling object model.
Falling object model
Here h is measured in feet, t is the number of seconds the object has fallen, and s is the initial height from which the object was dropped.
The object's increase in speed is due to Earth's gravitational pull. On a planet whose gravitational pull is different from that of Earth, the factor would be replaced by another constant.