Answer 1

(a) The first equation of motion is - 
`v = u + at`
Second equation of motion is -
`s = ut + 1/2at^2`
Third equation of motion is -
`v^2 = u^2 + 2as`
Where,
(s) - Displacement
(u) - Initial velocity
(a) - Acceleration
(v) - Final velocity
(t) - Time taken