What is kinetic energy ? Derive an expression for it .
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Answer:
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. Consider a body of mass "m" starts moving from rest. After a time interval "t" its velocity becomes V.
KE = ½ mv²
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Answer:
Kinetic energy is the energy to the virtue of its motion
Explanation:
We have work=force×displacement
=mas
we know that v²-u²=2as
therefore kinetic energy=m×1/2×(v²-u²)
=m(v²-u²)/2
assuming initial velocity u=0
we have kinetic energy=1/2×mv²
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