A car is traveling at a constant speed along the road ABCDE shown in the drawing

Question

A car is traveling at a constant speed along the road ABCDE shown in the drawing. Sections AB and DE are straight. Rank the accelerations in each of the four sections according to magnitude, smallest to greatest.

Explanation / Answer

BC>CD>AB=DE BC is a sharp curve, therefore the car is accelerating relatively quickly towards the centre. CD is also a curve, but since it's longer, the car doesn't experience as much of a force. These are both greater than the straight lines, with which there is ZERO acceleration since the speed is constant.

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