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discuss wheels and ball bearings.

Dear student
Kindly refer the links below for answer

https://www.meritnation.com/ask-answer/question/what-are-ball-bearings/science/1898381

https://www.meritnation.com/ask-answer/question/explain-why-wheels-are-so-useful/friction/11026225

Regards 

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Ball bearings or roller bearings are inventions that is used to reduce friction.
Wheels are invention found during the medival period that made a development in the trasport facility of the people
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A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races
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