The equation that is hard to read on the left is vt $($i $+1)=$ v $($ti$)+[$g $-$ cd$/$m $*$v$($ti$)2]($t i $+1-$ti$)$

The i$\text{'}$s are all subscripts.

Reprodude the plot above using the equations on the left.

I need a matlab code that includes both the codes and figure