Uniform gravitational field without air resistance (altitude)
Free fall is any motion of a body where its weight is the only force acting upon it. If gravity is the only influence acting, then the acceleration is always downward and has the same magnitude for all bodies.
Falling in air, as long as the force of gravity on the object is much greater than the force of air resistance, the altitude with respect to time can be calculated by the initial position and the initial velocity of the object.
|yt||The altitude with respect to time (m)|
|y0||The initial altitude (m)|
|u0||The initial velocity (m/s)|
|t||The time elapsed (s)|