Two boys are riding their bicycles on


Two boys are riding their bicycles on the same concrete road. One has new tyres on his bicycle while the other has tyres 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?


The boy having the tyres which are old and used is most likely to slip because these tyres will experience less friction force which is insufficient to

move on the oily road.

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