Free fall of two bodies. How the velocity and position of the body in free fall depends on initial values of these parameters?

The velocity v and height h of a body in free fall depends on time t of the fall, initial height h0  and of initial velocity v 0 of the body: Total time of the fall is Change initial values of parameters and see that in any case for each body the graph v=v(t) is linear and graph h=h(t) is a parabola.

Initial Values of Parameters Initial height of body 1 (H0 ) 100 m Initial velocity of body 1 (V0 ) 0 m/sec Initial height of body 2 (H0 ) 50 m Initial velocity of body 2 (V0 ) 0 m/sec Gravitational constant (g) 9.8 m/sec2