Question

Can any object have momentum even if its mechanical energy is zero? Explain

  • Work and energy CBSE Class 9
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Answer

No. Zero mechanical energy means that there is no potential energy and no kinetic energy. Therefore, if kinetic energy is zero, becomes zero and hence, there will be no momentum. Mathematically,

Mechanical energy = 0

โ‡’ PE = 0, KE = 0

โ‡’ V = 0

โ‡’ mv = p = 0

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