The three equations are,

• v = u + at.

• v² = u² + 2as.

• s = ut + ½at²

First equation:

The first equation of motion gives the relation between "velocity and time".

• v = Final velocity

• u = Initial velocity

• a = Acceleration , due to gravity in earth , which is (-10m/s)

• t = Time

Second equation:

The second equation of motion "gives the position-time relation".

• v^2 = square of Final velocity

• u^2 = square of initial velocity

• 2* a = 2 * acceleration

• s = Displacement

Third equation:

The third equation of motion "gives the final velocity of an object under uniform acceleration given the distance traveled and an initial velocity".

• s = Displacement

• ut = Initial velocity * time

• 1/2at^2 = 1/2 * acceleration * time^2