what is kinetic energy. Derive its equation
Answers
Answer:
In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
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Kinetic energy
Common symbols KE, Ek, or T
SI unit joule (J)
Derivations from other quantities Ek = ½mv2 Ek = Et + Er
Explanation:
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Answer:
Kinetic energy is a body moving with a certain velocity is equal to the work done on it to make it acquire that velocity.
Derivation
V square- u square=2as
This gives
S=v^2-u^2/2a
We know that f=ma
Using 1 and 2 equation we can write
W= ma v^2-u^2/2a
W= 1/2 m v^2-u^2
It is clear that the work done is equal to the change in kinetic energy of
an object
U=0
W=1/2mv^2
Kinetic energy =1/2mv^2
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