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Question 6007
NEET Physics · Medium

Work, Energy & Power: Work Done MCQ

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Work DoneMediumQuestion 6007

Question

Work done by friction on a block sliding on a rough surface is:
  1. A
    Positive
  2. B
    Zero
  3. C
    Negative
    Correct
  4. D
    Depends on speed

Correct answer

Negative

Explanation

Friction opposes motion (180° angle). W = Fd cos180° = negative.

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