How do I access data from an array using for statements?

I have a vector called data the size of the vector is 15x2. The I want to extract the first column starting with the second row using for statements. I will keep adding more rows or will remove some with more data I get. I this is my code right now:

for x = data(2:length(data),[1,1])  %velocities
  vels = x;
end

However I want to access each value one by one to plug into a formula. Is there a better way to do this?

Answer 1

[Babak]

 z = [ones(15,1),2*ones(15,1)]

 for j = 2:size(z,1)
   vel = z(j,1);   % element of jth row and 1st column

 end