Drag point [math]P[/math] along the parabolic trajectory and observe how the position vector [math]\mathbf{r}(t)[/math], the velocity vector [math]\mathbf{v}(t)[/math] and the acceleration vector [math]\mathbf{a}(t)[/math], are related.[br][br]Drag the point at the tip of the vector [math]\mathbf{v}_0[/math] to change the initial velocity and hence the parabolic trajectory.

[i]Developed for use with Thomas' Calculus, published by Pearson.[/i]