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A ball is dropped from a height of 10m. Ball is embedded in sand of 1m and stops.
  • a)
    both momentum and kinetic energy are conserved
  • b)
    Neither K.E nor momentum is conserved.
  • c)
    only momentum remains conserved
  • d)
    only kinetic energy remains conserved
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
A ball is dropped from a height of 10m. Ball is embedded in sand of 1m...
When body is dropped from height, the potential energy deceases and kinetic energy increases. A ball dropped from height will conserve only kinetic energy.
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Most Upvoted Answer
A ball is dropped from a height of 10m. Ball is embedded in sand of 1m...
Explanation:

Initial Situation:
- The ball is dropped from a height of 10m, which means it has potential energy due to its position above the ground.

Final Situation:
- The ball is embedded in sand of 1m and stops. This means that the ball has come to a stop and has lost all its kinetic energy.

Conservation of Kinetic Energy:
- Kinetic energy is not conserved in this situation because the ball loses all its kinetic energy when it comes to a stop in the sand. The kinetic energy is converted into other forms such as heat and sound energy during the impact with the sand.

Conservation of Momentum:
- Momentum is conserved in this situation. When the ball drops from a height, it gains momentum due to gravity. As it comes to a stop in the sand, the momentum is transferred to the sand and the ball, causing them to move together.
Therefore, in this scenario, only kinetic energy is not conserved while momentum remains conserved. The correct answer is option 'D'.
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A ball is dropped from a height of 10m. Ball is embedded in sand of 1m and stops.a)both momentum and kinetic energy are conservedb)Neither K.E nor momentum is conserved.c)only momentum remains conservedd)only kinetic energy remains conservedCorrect answer is option 'D'. Can you explain this answer?
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