A free fall of a material point is being examined. In order to find the solution of the considered example formulas for an accelerated motion and kinetic and potential energy in the gravitational field are used.
v = v_0 + a \cdot t
s = v_0 \cdot t + \frac{a \cdot t^2}{2}
E_k = \frac{m \cdot v^2}{2}
E_p = m \cdot g \cdot h