Problem with Matlab program

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William Plummer 2019-2-16

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关闭： MATLAB Answer Bot 2021-8-20

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Im having some issues with my program, Im trying to compute the ideal-line-of-sight angle for a problem but I cant input my Distance or time. I was working on this same issue earlier today and there was not a problem (although I was using a earlier edition of Matlab). This is what I have for my script so far:

clear
clc
%% Part A
disp('Food delievery requirements')
a=input('what is the horizontal speed in mph?');
b=input('what is the altitude of the airplane in meters?');
time=sqrt(b/4.9);
fprintf('%2.2\t',time); 
disp('seconds')
%% Part B
v=a.*.44704;
Distance=(v.*time)+(1/2.*0.*time^2);
fprintf('%3.2\t', Distance)
disp('meters')

The formula that im using won't display any numbers in this edition. I also plan on using whatever numbers that result from the input to place into an inverse tangent function to get the line- of- sight angle. Will this work or is there a better method that I can use?

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Walter Roberson 2019-2-16

your a variable looks like either thrust rate or fuel supply. Thrust has to be divided by current mass to get acceleration and current mass decreases as fuel is burned (so acceleration increases because the object is getting lighter . ) Your code does not appear to take mass into account .

William Plummer 2019-2-27