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Question

If a ball falls from a height, h. After it falls through a distance, the sum of its kinetic and potential energy


  1. is greater than the potential energy at h 

  2. is lesser than its potential energy at h

  3. is equal to potential energy at h. 

  4. might be greater or lesser than its potential energy at h


Solution

The correct option is C

is equal to potential energy at h. 


It is equal to potential energy at h. Due to conservation of energy, the total energy at every instant is the same. At maximum height the total energy is equal to potential energy as kinetic energy is zero.

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