Question

check the correctness of k.E = 1/2(mv~2)

Answer 1

hey mate.......


KINETIC ENERGY. "Energy posses by a body by virtue of its motion is referred to as 'Kinetic Energy'". FORMULA. K.E. = 1/2 mv2. 

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Answer 2

heya answer is here...........


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Ravinder answered 4 year(s) ago

Derivation of the equation for kinetic energy (K.E = ½ m v 2)

 Derive f the equation for kinetic energy?
 Derive f the equation K.E = ½ m v 2

Class-IX Physics

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Asked by Madhusudhan

Mar 12

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Amarnathreddy , SubjectMatterExpert

Member since Jul 09 2013

How to derive an equation for Kinetic Energy?
Answer:  
From equations of motion, the relation connecting the initial velocity (u) and final velocity (v) of an object moving with a uniform acceleration a, and the displacement, s is  
But from Newton’s second law of motion F = m a.
work done by the force, F is written as the following:

If the object is starting from its stationary position, that is, u = 0, then

From work and energy theorem, work done is equal to the change in the kinetic energy of the object.
 w = (1/2) mv 2
If u = 0, the work done will be,
Thus the kinetic energy possessed by an object of mass, m and moving with a uniform velocity, v is
 K.E = (1/2) mv 2.



it may be helps dear.....