Hello all, I am trying to plot a simple trajectory in MATlab. Here is the code I wrote, v0 = 100; theta = pi/4; t=0:0.1:20; horizontal(t)=t.*v0.*cos(theta) vertical(t)=t.*v0.*sin(theta)-4.905.*t.^2 %teacher gone missing, again, ARRRGGHHH!!!!!! title('Ballistic Trajectory of a Projectile'), xlabel('horizontal distance, m'), ylabel('vertical distance, m') plot (t,horizontal(t)) I am getting this error, "Subscript indices must either be real positive integers or logicals." If I input individual values for 't' it produces the correct results up until the vertical distance reaches it's 'maximum' but do not know why?