This shows how to use vectors to model the position of a boat moving with constant velocity as a function of time. Use the [math]x_0[/math] and [math]y_0[/math] sliders to set the position of the boat at [math]t=0[/math], and use the [math]v_x[/math] and [math]v_y[/math] sliders to set the components of the velocity vector. Use the [color=#b20ea8]t slider[/color] to see the position of the boat for other values of t.