Question

MATLAB help? ;/ im so lost

You're driving to California, and start at a green light at a velocity of 0 mph. Every two seconds your velocity increases by 5 mph. You will reach a maximum velocity at t=60 seconds.
a. Create an array for time and an array for velocity.
b. Plot the velocity vs. time and label the axes.

Answer 1

It says I have use some pseudo code first.. what's that mean?

Answer 2

your velocity is off

Answer 3

pseudo (false) code is just the main ideas written in "code" but without attention to syntax or specific function calls

Answer 4

I have this document to help.. but I'm not sure which one to go off from to help me.

Answer 5

5 will not work either

Answer 6

6?

Answer 7

5/2

Answer 8

you should use the idea that Velocity= V0 (start velocity)+ A*t
where A is the acceleration
they tell you acceleration is 5 mph/ 2 sec

Answer 9

I have to use a pseudo code first , but im not sure what or how to do that. Are pseudo codes the codes that are in the pdf I just uploaded ?^

Answer 10

pseudo code is close to this

Define acceleration a=5/2
make t an array of time t=0:60
let V (velocity) be 0 + a*t
plot(t,V)
label the axes

Answer 11

Example


A= 5/2; % acc in mph per second
t= 0:60; % for 60 seconds
V= A*t; % find the velocity as a function of time
plot(t,V,'.');
xlabel('TIME (sec)'); ylabel('Velocity (mph)');
grid on; shg

Answer 12

You could use example (2).

I have a quibble with it, in that you should not use i as a variable name. i is pre-defined as sqrt(-1) and if you get into the habit of redefining i (which is what happens when you use it as a variable), someday with will make a mistake...

but you could do this
a= 5/2;
n= 60;
t= 0:n;
v= zeros(size(t)); % create a vector v to hold the answer
for ii=0:n
v(ii+1)= a*t(ii+1);
end;

and then plot it

Answer 13

okay, I'll try it out. THANK you so much :)