Re: plot of the displacement coordinates (x,y)

"ibraheem yameen" wrote in message <ocvq7t$qf0$1@newscl01ah.mathworks.com>...
> In projectile motion, at any time (t), the projectile's horizontal (x) and vertical (y) displacement are:
>
> x=v_o cos?? t
>
> y=v_o sin?? t-5t^2
>
> where v_ois the initial velocity and ?? is the initial launch angle.
>
> Ali kicks the ball and ball does projectile motion with an initial launch angle (??) of 53° and its initial velocity v_o is 10 m/s.
>
> a) Make a plot of the displacement coordinates (x,y) between t = 0 and t = 2s.
>
> b) Complete the plot with a title, grid, xlabel and ylabel.
>
> c) Using the Matlab commands ‘max’ and ‘find’ locate the maximum height it can reach then highlight this point with red stem (using ‘stem’ plot).
>
> d) Using the figure tool ‘Data cursor’, find the horizontal range (d) of the ball. Please note that the horizontal range is the horizontal distance it has travelled when it returns to its initial height (y =~ 0).
>
> e) Insert a text saying ‘The horizontal range (d)’ near the located data cursor point.
>
> please help me

please anybody can help me ?