Two boys are riding their bicycles on the same concrete road. One has new tyres on his bicycle while the other has tires that are old and used. Which of them is more likely to slip while moving through a patch of the road which has lubricating oil spilled over it?

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Bicycle with new tyres

Bicycle with old tyres

None of the bicycle

Both bicycles

answer is B.

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Detailed Solution

The tyre which has been used and old is more likely to skid.
The surface of a new tyre is designed in such a way that the liquid traps in between the grooves of the new tyres. So they are less risky to get slipped. In other words, there is sufficient friction between the new tyre and the road. Wear and tear occur on the tyre as it is used, and its surface smoothens, reducing friction between the tyre and the road. As a result, it is more likely to skid.

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