Saturday, 2 December 2017

Equations of Motion(and their derivation)

There are three equations of motion:-



Explanation:-



This equation is used to find the final velocity of a body or latest velocity of body or current velocity of body. This equation is known ass first equation of body.
Whenever a body starts to move it have some initial velocity and when after some interval of time t it have some change in velocity, after which its velocity becomes So above equation is for final velocity. Now see its derivation.
Change in velocity ∆v is equal to,

(2)

This is equation is used to find the distance covered by a body having initial velocity Vi and after time t.
Consider a car moving with initial velocity Vi and final velocity Vf, then it would have average velocity will be,

 

(3)

In this equation there is distance , acceleration, final velocity and initial velocity are related.
We could find one, if we know other.
According to first equation of motion,










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