Solve.
-While traveling at a constant speed in a car, the centrifugal acceleration passengers feel while the car is turning is inversely proportional to the radius of the turn. If the passengers feel an acceleration of 20 feet per second per second when the radius of the turn is 90 feet, find the acceleration the passengers feel when the radius of the turn is 360 feet.
A) 7 feet per second per second
B) 8 feet per second per second
C) 6 feet per second per second
D) 5 feet per second per second

Question

Quizplus · Accepted Answer

The centrifugal acceleration is inversely proportional to the radius, so if the radius increases by a factor of 4 (from 90 to 360 feet), the acceleration decreases by a factor of 4. Thus, 20 feet per second per second divided by 4 equals 5 feet per second per second.

Solve. -While Traveling at a Constant Speed in a Car, the the Centrifugal