how to dervie equations of motion in a easy way?

Asked by  | 12th Oct, 2008, 12:20: PM

Expert Answer:

acceleration = rate of change of velocity

a = (v - u) / t

or, at = v - u

or, v = u + at ( 1st eqn of motion)

Distance = average velocity x time

or     s = [( v + u ) /2 ] x t

or,    s =  [(u + at + u)/2] x t

or ,    s = ut + at2/ t ( 2nd eqn of motion)

Also,    s = average velocity x t

or,   s = [(v + u)/ 2]  x [(v - u)/a]

or,   s  = (v2 - u2) / 2a

or,  v2 - u2 = 2as ( 3rd eqn of motion)

Answered by  | 13th Oct, 2008, 06:22: PM

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