Hello

this is what I'm trying to do:

1. A particle moves in a straight line for 40 s. The velocity as a function of time is: (example)

t<10
v = 2*t

10<=t<=25
v = 1.5*t

25<t<=35
v = 2*t - 20

35<t<=40
v = 10
 
 
Create  an M‐file  that  calculates  the  velocity  as  function  of  time  and  plots  the velocity with time. Use if construct.


It's just a question from a textbook for beginners.
What I'm trying to do so far is to declare t = 0:0.1:40 before running the IF, which is not working because whenever I write if t<10 v = 1.4.*t I'm telling the program that when that condition is complied it should multiply 1.4 to the whole "array" t.

I appreciate any help,

Thanks