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Q: The work done by friction does not destroy, but it is converted into .................... energy.
  • A. thermal
  • B. nuclear
  • C. chemical
  • D. friction
Correct Answer: Option A - When an object slides or rolls on a surface, friction force arises between the touching surfaces that acts in the opposite direction of motion of the object. The work done by friction does not decay and gets converted into thermal energy.
A. When an object slides or rolls on a surface, friction force arises between the touching surfaces that acts in the opposite direction of motion of the object. The work done by friction does not decay and gets converted into thermal energy.

Explanations:

When an object slides or rolls on a surface, friction force arises between the touching surfaces that acts in the opposite direction of motion of the object. The work done by friction does not decay and gets converted into thermal energy.