Free Fall Model 
After building the constant velocity model and modifying it for
acceleration, the students are then asked to modify the model again so
that it shows the motion of a falling object. Their model should be
flexible enough to allow for different accelerations due to gravity and it
should show negative velocities and displacements.
Height(t) = Height(t  dt) + (Rate_of_change_of_Height) * dt INIT Height = 100 {m} Rate_of_change_of_Height = Velocity Velocity(t) = Velocity(t  dt) + (Rate_of_Change_of_Velocity) * dt INIT Velocity = 0 {m/s} Rate_of_Change_of_Velocity = Acceleration_due_to_gravity Acceleration_due_to_gravity = 9.8 {m/s^2} Time Specs SettingsStandard: Range 012; dt = 0.25; Integration Method = Euler's 
