Solved UPSC CDS/OTA Question
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Q · Work, Energy and PowerMedium · 45s
A block is sliding on a rough horizontal surface with initial KE K. Work done by friction before it stops is:
TopicWork, Energy and Power
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
← Previous questionQ 30 / 30
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
Friction does negative work equal in magnitude to the initial KE, bringing it to rest.
Final Answer: Option B — –K