v=u+at (1)
s=u*t+1/2*a*t^2 (2)
below 3 equations, can substitute (1) into it to form (2)
s=1/2*(u+v)*t (3)
v^2=u^2+2*a*s (4)
s=v*t-1/2*a*t^2 (5)
can these 5 equations be considered as a solution set of solve function?
or
is only first 2 equations be a solution set?
if so, number of equations less than 5 variables, is there something missing?
