Correct Answer - Option 1 : 0
CONCEPT:
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Perfectly elastic collision: A perfectly elastic collision is defined as one in which there is no loss of kinetic energy and momentum of the system is conserved in the collision.
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Inelastic collision: A inelastic collision is defined as one in which there is a loss of kinetic energy and momentum of the system is conserved in the collision.
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Coefficient of restitution is the ratio of relative velocity after impact to the relative velocity before impact.
Coefficient of restitution (e)
\({\rm{e}} = \frac{{{\rm{Relative\;velocity\;after\;collision}}}}{{{\rm{Relative\;velocity\;before\;collision}}}} = \frac{{{{\rm{v}}_2} - {{\rm{v}}_1}}}{{{{\rm{u}}_1} - {{\rm{u}}_2}}}\)
- For perfectly elastic collision, e = 1
- For inelastic collision, e < 1
- For a perfectly inelastic collision,e = 0
EXPLANATION:
As from the above discussion, we can say
- The coefficient of restitution for perfectly inelastic bodies is: e = 0
So option 1 is correct.
