Round to the Nearest Tenth Unless Indicated Otherwise

Multiple Choice

Round to the nearest tenth unless indicated otherwise.
-The force needed to keep a car from skidding on a curve varies jointly as the weight of the car and the square of the car's speed, and inversely as the radius of the curve. If a force of 3600 pounds is needed to keep an
1800 pound car traveling at 20 mph from skidding on a curve of radius 600 feet, what force would be required
To keep the same car from skidding on a curve of radius 640 feet at 50 mph? Round your answer to the nearest
Pound of force.

A) 20,962 lb
B) 21,094 lb
C) 21,126 lb
D) 21,664 lb