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disp (['not part of anything but i wrote this below and no matter what i do ' ...

' n/ i cant get it to plot, Please help me ' ...

'n/My original plan was to get it to plot in an animated ' ...

' n/format but id take anything if it works'])

close all %Closes all other windows associated with Matlab.

clear %Erases all existing variables.

clc %Clears the command window.

%% Input Data

disp ('What are the given Data')

prompt = 'What is the Initial Speed of the projectile in m/s?';

v0 = input (prompt);

prompt2 = 'What is the angle of the projectile in degrees?';

theta = input (prompt2);

prompt3 = 'What is the acceleration due to gravity in m/s^2?';

g = input (prompt3);

%%Calculations and those other sections can be used to display the calculated data

%% TODO

disp ('Given Data')

v = 0;

%% The horizontal component of the velocity.

disp ('Horizontal Velocity (HV)')

HV = v0*cosd(theta);

%% The vertical component of the velocity.

disp ('Vertical Velocity (VV)')

VV = v0*sind(theta);

%% The greatest height above ground attained by the shell.

disp ('Greatest height above ground in meters')

Vsy = abs((v^2 -(VV^2))/(2*g)); % abs() is used to make the value always postive.

%% Time Taken for the projectile to fall to the ground after reaching it's maximum height.

disp ('Time Taken in seconds (tt)')

tt = abs((v-VV)/g);

%% Total air time of the projectile.

disp ('Total Time (Tt)')

TT = tt*2;

T = linspace(0,TT);

%% Maximum Horivontal distance travelled by the projectile

disp ('Max Horizontal Distance')

Hsx = HV*T;

%% Pjectiles motion shown graphically

plot(Hsx, Vsy, 'b-', 'LineWidth', 3);

grid on;

grid minor

Chunru
on 7 May 2021

Try this:

disp (['not part of anything but i wrote this below and no matter what i do ' ...

' n/ i cant get it to plot, Please help me ' ...

'n/My original plan was to get it to plot in an animated ' ...

' n/format but id take anything if it works'])

close all %Closes all other windows associated with Matlab.

clear %Erases all existing variables.

clc %Clears the command window.

%% Input Data

disp ('What are the given Data')

prompt = 'What is the Initial Speed of the projectile in m/s? ';

v0 = input (prompt);

prompt2 = 'What is the angle of the projectile in degrees? ';

theta = input (prompt2);

prompt3 = 'What is the acceleration due to gravity in m/s^2? ';

g = input (prompt3);

%%Calculations and those other sections can be used to display the calculated data

%% TODO

disp ('Given Data')

v = 0;

%% The horizontal component of the velocity.

HV = v0*cosd(theta);

fprintf('Horizontal Velocity (HV): %f\n', HV)

%% The vertical component of the velocity.

VV = v0*sind(theta);

fprintf ('Vertical Velocity (VV): %f\n', VV)

%% The greatest height above ground attained by the shell.

Vsy = abs((v^2 -(VV^2))/(2*g)); % abs() is used to make the value always postive.

fprintf ('Greatest height above ground in meters: %f\n', Vsy)

%% Time Taken for the projectile to fall to the ground after reaching it's maximum height.

tt = abs((v-VV)/g);

fprintf('Time Taken in seconds (tt): %f\n', tt)

%% Total air time of the projectile.

TT = tt*2;

fprintf ('Total Time (Tt): %f \n', TT)

T = linspace(0,TT,50); % 50 points

%% Maximum Horivontal distance travelled by the projectile

Hsx = HV*T;

fprintf ('Max Horizontal Distance: %f \n', Hsx(end))

%% Pjectiles motion shown graphically

% Hsx is the horizontal distance points

Hsy = VV*T - 0.5*g*T.^2;

plot(Hsx, Hsy, 'b-', 'LineWidth', 3);

grid on;

grid minor

Make sure compute the value before display (or fprintf).

VBBV
on 7 May 2021

%if true

plot(Hsx, 'b-', 'LineWidth', 3);

grid on;

grid minor

Vsy is scalar with one value. That's why plot does not show. If you want to plot, make it a vector.

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