In collision, total energy is conserved only

if it is perfectly elastic.

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if it is perfectly inelastic.

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if it is either perfectly elastic or perfectly inelastic.

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None of these.

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Solution

The correct option is A if it is perfectly elastic.
If a collision is a perfectly elastic, total enegy of the system is conserved.

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Similar questions

K . E .

K . E .

List - I	List - I
a) Perfectly Inelastic Conserved	e) KE of the System Collision Conserved
b) Perfectly Elastic Collision	f) $0 \leq e \leq 1$
c) Law of Conservation of Momentum	g) Change of linear Momentum
d) Impulse = zero	h) Coefficient of Restitution =0 i) Coefficient of Restitution > 1

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