Plotting Velocity-Time Curve for multiple angles.

I have an assignment where I have to plot multiple curves generated by providing multiple angles to a function.

function[ycord,xcord] = Q2(initialvel, time, launchangle, initialposx, initialposy, gravity, velocityx, velocityy)

%Initial Vel = vectored initial velocity
%Initial y = initial y-axis position
%initial x = initial x-axis position
%veloctiy x = velocity of x
%velocity y = velocity of y
%time = time (seconds)
%Gravity = gravity (ms-2)
%theta = launch angle

%For question purposes, theta values have to be asked for.
%The values for everything apart from theta have also been added.

   initialposx = 50;
   initialposy = 100;
   gravity = -9.81;
   initialvel = 1;
   time = 1;

for d = 1:3

      hold on

      launchangle = input('Please input a Launch Angle between 1 and 90')*(pi/180);

%Formula to calculate x velocity
velocityx = initialvel*cos(launchangle)
%Formula to calculate y velocity
velocityy = initialvel*sin(launchangle)
%Formula to calculate y-cordinate

ycord = initialposy + velocityy * time - (1/2*gravity*(time^2))
%Formula to calculate x-cordinate
xcord = initialposx + velocityx * time

title('Angry Birds Knockoff Matlab Game');

   plot(xcord,ycord, '--rs', 'linewidth', 2);

end

How can I plot this so that it shows as a curve, and not just a final point??

Thanks

Answer 1

[KSSV]

clc; clear all
function[ycord,xcord] = Q2(initialvel, time, launchangle, initialposx, initialposy, gravity, velocityx, velocityy)
%Initial Vel = vectored initial velocity
%Initial y = initial y-axis position
%initial x = initial x-axis position
%veloctiy x = velocity of x
%velocity y = velocity of y
%time = time (seconds)
%Gravity = gravity (ms-2)
%theta = launch angle
%For question purposes, theta values have to be asked for.
%The values for everything apart from theta have also been added.
initialposx = 50;
initialposy = 100;
gravity = -9.81;
initialvel = 1;
time = 1;
xcord = zeros(3,1) ;
ycord = zeros(3,1) ;
for d = 1:3
    launchangle = input('Please input a Launch Angle between 1 and 90:')*(pi/180);
    %Formula to calculate x velocity
    velocityx = initialvel*cos(launchangle) ;
    %Formula to calculate y velocity
    velocityy = initialvel*sin(launchangle) ;
    %Formula to calculate y-cordinate
    ycord(d) = initialposy + velocityy * time - (1/2*gravity*(time^2)) ;
    %Formula to calculate x-cordinate
    xcord(d) = initialposx + velocityx * time ;
end
title('Angry Birds Knockoff Matlab Game');
plot(xcord,ycord, '--rs', 'linewidth', 2);