help calling a function

I'm working on a project where I graph the position vs time of a object in free fall and I seem to be stuck calling the function and am a bit lost. I am required to use both a function and loop aswell. Thank you!

%Graphing position in free fall vs time(by 1 sec)
%(in respect to the ground)

    prompt = 'Please give intial velocity in m/s: ';
    v0 = input(prompt);
    prompt = 'Input intial height in meters: ';
	y0 = input(prompt);
    
    [plot(t,ypos)] = height(v0,y0)
    
function height = findypos(v0,y0)
    t = 0;   %Time 
    g = 9.81;  %m/s^2
    while ypos >= 0
        y = y0+v0*t-0.5*g*t.^2;   %Y position from initial y
        ypos = y0-y; %y pos from ground
        t=t+1; %time step
    end 
    plot(t,ypos) 
end

Answer 1

[KSSV]

You need to proceed something like shown below:

function main()
%Graphing position in free fall vs time(by 1 sec)
%(in respect to the ground)

    prompt = 'Please give intial velocity in m/s: ';
    v0 = input(prompt);
    prompt = 'Input intial height in meters: ';
	y0 = input(prompt);
    Y = findypos(v0,y0) ;
    plot(Y) 
    
end
function Y = findypos(v0,y0)
    t = 0;   %Time 
    g = 9.81;  %m/s^2
    ypos = y0 ; 
    count = 1 ; 
    Y(count) = y0 ; 
    while ypos >= 0
        y = y0+v0*t-0.5*g*t.^2;   %Y position from initial y
        ypos = y0-y; %y pos from ground
        t=t+1; %time step
        count = count+1 ;
        Y(count) = ypos ; 
    end 
  
end