drive an expression for the kinetic energy of an object
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Answer:
HEYA!!UR ANSWER IS THIS
Explanation:
The equation for kinetic energy is: KE=21mv2.
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Answered by
2
Answer:
Consider a body of mass ‘m’ at rest. Let a constant force F act on the body producing an
acceleration ‘a’ for a distance ‘s’. Let the velocity of the body be changed to v.
In this case, initial velocity =0.
Final velocity =v.
Using, v2=u2+2as
v2=0+2as
v2=2as
s=2av2
Work done F∗s
=mas=ma2av2
Work done =21mv2
By definition this work done is equal to the kinetic energy.
∴ kinetic energy of the body, Ek=21mv2.
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