explain the codes below in details: % request the user to input the desired option with regard the unit % if the user input is ‘MKS’, then the units will be in meters and seconds % If the user input is ‘FPS’, then the units will be in feet and seconds unit = input("Please choose a unit: MKS (meters and seconds) or FPS (feet and seconds): ", "s"); % conditional statements enable you to select at run time which block of code to execute % in the situation where the user has input “MKS” if (unit == "MKS" || unit == "mks") % gravity is equivalent to -9.81 gravity = -9.81; % in the situation where the user has input “FPS”
explain the codes below in details: % request the user to input the desired option with regard the unit % if the user input is ‘MKS’, then the units will be in meters and seconds % If the user input is ‘FPS’, then the units will be in feet and seconds unit = input("Please choose a unit: MKS (meters and seconds) or FPS (feet and seconds): ", "s"); % conditional statements enable you to select at run time which block of code to execute % in the situation where the user has input “MKS” if (unit == "MKS" || unit == "mks") % gravity is equivalent to -9.81 gravity = -9.81; % in the situation where the user has input “FPS”
Chapter6: Looping
Section: Chapter Questions
Problem 11PE
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Concept explainers
Control structures
Control structures are block of statements that analyze the value of variables and determine the flow of execution based on those values. When a program is running, the CPU executes the code line by line. After sometime, the program reaches the point where it has to make a decision on whether it has to go to another part of the code or repeat execution of certain part of the code. These results affect the flow of the program's code and these are called control structures.
Switch Statement
The switch statement is a key feature that is used by the programmers a lot in the world of programming and coding, as well as in information technology in general. The switch statement is a selection control mechanism that allows the variable value to change the order of the individual statements in the software execution via search.
Question
Please explain the codes below in details:
% request the user to input the desired option with regard the unit
% if the user input is ‘MKS’, then the units will be in meters and seconds
% If the user input is ‘FPS’, then the units will be in feet and seconds
unit = input("Please choose a unit: MKS (meters and seconds) or FPS (feet and seconds): ", "s");
% conditional statements enable you to select at run time which block of code to execute
% in the situation where the user has input “MKS”
if (unit == "MKS" || unit == "mks")
% gravity is equivalent to -9.81
gravity = -9.81;
% in the situation where the user has input “FPS”
elseif (unit == "FPS" || unit == "fps")
% gravity is equivalent to -32.174
gravity = -32.174;
else
% in the situation where the user has input none of the provided options
error = " Please enter an input only within the provided options ";
% disp( ) displays the value of variable without printing the variable name
% display error
disp(error)
% return control to the invoking program before it reaches the end of the script or function
return
% to terminate statements
end
% for the variables needed in accordance with the formula
% request the user to input the desired value for the magnitude of the initial velocity
Vo = input("Enter magnitude of the initial velocity: ");
% request the user to input the desired value for the angle
theta = input("Enter angle: ");
% request the user to input the desired value for the height
h = input("Enter height: ");
% request the user to input the desired value for the acceleration
ax = input("Enter acceleration: ");
% mathematical formula equations
% formula equation for time
time = (Vo.*sind(theta) + sqrt((Vo.*sind(theta)).^2-2*gravity*h)) / (-gravity);
t = linspace(0,time);
% formula equation for velocity (x)
velocityx = Vo*(cosd(theta));
% formula equation for velocity (y)
velocityy = Vo*(sind(theta));
% formula equation for displacement (x)
displacementx = (velocityx.*t) + ((1/2)*ax*(t.^2));
% formula equation for displacement (y)
displacementy = (velocityy.*t) + ((1/2)*gravity*(t.^2));
% formula equation for final velocity (x)
finalvelocityx = sqrt(velocityx.^2 + 2*ax*displacementx);
% formula equation for final velocity (y)
finalvelocityy = sqrt(velocityy.^2 + 2*gravity*displacementy);
% formula equation for magnitude
magnitude = sqrt((finalvelocityx.^2)+(finalvelocityy.^2));
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