Ok, I know matlab too.
The most important bit of coding is to think about the logical steps you need to get to your destination. Here you are asked to plot the trajectory of a projectile that is launched and affected by lateral wind. Fortunately for you, the equations you need are already given and you do not need to derive them yourself. The only thing left to do is to implement these equations into matlab code.
With matlab, figure plotting is usually done by taking many data points. The simplest example would be, say I want to plot y=t+2 from t = 1 to 10, then I might have two vectors, one containing your independent variable and one containing your dependent variable.
e.g.
[1 :0.01:10]
will generate your values of t, from 1 to 10, with a step of 0.01.
then you input
y = t+2
and it will add 2 to each of the values and save that vector as y.
Since your average computer is powerful enough to manipulate thousands of points in a few seconds, just choose a small step change like 0.01 or something.
Use the method described above to generate a vector of x, a vector of y, and a vector of z, that correspond to the same time scale.
Now we want to plot the trajectory of the object, and since we are plotting x against y against z, and not against t, you would use the 3
line plot function, 'plot3()'. Search the matlab documentation online on their website or use google to find out how to use plot3.
You will bump into a problem: the question asks you to plot the trajectory until it hits the ground and you don't know when it hits the ground. There are two ways around this. You could use your hand calculations (hint, when z = 0, you hit the ground), or you could, after testing a time value that exceeds the required time, insert some code to tell matlab to delete the x y z data after you hit the ground.
Matlab Code
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