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Final Velocities

Elastic force...

Question

Elastic forces are not always conservative. Why

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Q. Select the correct alternative

(s)

a) Elastic forces are always conservative
b) Elastic forces are not always conservative
c) Elastic forces are conservative only when Hooke's law is obeyed
d) Elastic forces may be conservative even when Hooke's law is not obeyed

Q. State whether the following statements are true or false with reasons.
Elastic forces are always conservative.

Q. Assertion :In elastic collision, kinetic energy is conserved. Reason: Energy is always conserved.

Q. Applied force and the elastic force are always in the

Q. Assertion: In elastic collision, kinetic energy is conserved
Reason: Energy is always conserved.
MY PROBLEM
According to book Answer is (b) [both are true but reason is not the explanation of assertion]
Assertion is true but I think reason is false because Energy is conserved only in elastic collision and in Reason it is not mentioned whether it is elastic or inelastic.

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