CBSE Class 9 Answered
how to dervie equations of motion in a easy way?
Asked by | 12 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 | 13 Oct, 2008, 06:22: PM
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