Banked curves: Suppose a highway curve is properly banked to eliminate friction for a speed of 45 km/h. If your tires were bald and you wanted to avoid sliding on the road, you would have to drive
A) somewhat below 45 km/h.
B) somewhat above 45 km/h.
C) at exactly 45 km/h.

Question

Quizplus · Accepted Answer

The curve is designed to eliminate the need for friction at a speed of 45 km/h, so driving at exactly 45 km/h would prevent sliding even with bald tires.

Banked Curves: Suppose a Highway Curve Is Properly Banked to Eliminate