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In an elastic collision, the kinetic energy during the collision time is:
AFixed forever
BNot constant
CAlways zero
DAlways maximum
Answer & Solution
Correct answer: B. Not constant
1. Initial and final kinetic energies are equal.
2. During the brief contact some is held as deformation.
3. So the kinetic energy during the collision is not constant.
_Source: NCERT Class 11 Physics Part I, Chapter 6, Work, Energy and Power._
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