Should the driver apply brakes or turn the car in a circle of radius 'r' to avoid hitting the wall?(adsbygoogle = window.adsbygoogle || []).push({});

This question is in the excercise of circular motion chapter.

In this question I don't uderstand from where to start. Some help would be greatly appreciated.

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# A car driver going at some speed 'v' suddenly finds a wide wall at a distance 'r'.

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