Q.

Which of the following equations does not represent the kinematic equations of motion

1 v=u+at  
2 S=ut+12at2  
3 S=vt+12at2  
4 v2-u2=2aS  

Ans.

(3)

S=vt+12at2

It is not a kinematic equation of motion.

All others are kinematic equations of motion.