A) Both statements I and II are true, statement II is the correct explanation for statement I.
B) Both statements I and II are true, statement II is not the correct explanation for statement I.
C) Statement I is true and statement II is false.
D) Statement I is false and statement II is true.
Correct Answer: A
Solution :
Rolling reduces friction. It is always easier to roll than to slide a body over another. That is the reason it is convenient to pull luggage fitted with rollers. The rolling friction is smaller than the sliding friction. The correct answer is A.
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