The coefficient of restitution is a dimensionless value that measures the elasticity of a collision between two bodies. It is the ratio of relative velocity after impact to relative velocity before impact. Represented by ‘e,’ it ranges from 0 (perfectly inelastic) to 1 (perfectly elastic) and depends on material properties.
Chapter 5 of Class 11 Physics discusses Work Energy and Power. Work refers to the transfer of energy when a force causes displacement. Energy exists in forms like kinetic and potential and obeys the law of conservation. Power indicates the rate of doing work and is crucial in mechanical systems.
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The coefficient of restitution, e, is defined as the ratio of the relative velocity of separation to the relative velocity of approach between two colliding objects.
For a perfectly elastic collision, the kinetic energy and momentum are conserved, and the objects rebound without any loss of energy. Therefore, the coefficient of restitution for a perfectly elastic collision is:
e = 1
Final Answer:
The coefficient of restitution, e, for a perfectly elastic collision is 1.
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