# What is Second Equation of Motion

## Second Equation of Motion

Second Equation of Motion

According to the definition of the acceleration “The rate of change of velocity is called acceleration”.

i.e. Acceleration = Change of velocity/time

= > a = Vf-Vi/t

at = Vf – Vi

or

Vf = Vi + at ———–(i)

Substituting The average velocity:

Vav = (Vi + Vf)2 ——–(ii)

The distance covered by the body in a unit:

S = Vav/t

Putting the value of Vav from Equation (ii):

S = (Vi + Vf)/2] * t

Putting the value of Vf from equation (i).

S = [(Vi+Vi+at)/2]*t

S = [(2Vi+at)/2]*t

S = (Vi+at/2}*t

S = (ViT + l/2at2) (Here 2 is The square of the Time “t”. Don’t write this sentence in Examination}

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