Problema Solution
The stopping distance (s) of a car varies directly as the square of its speed (v). If a car traveling 35 mph requires 80 ft to stop, find the stopping distance for a car traveling 70 mph. Round to the nearest tenth. (Let A = 35, B = 80, and C = 70 in the figure below.)
Answer provided by our tutors
The stopping distance (s) of a car varies directly as the square of its speed (v). If a car traveling 35 mph requires 80 ft to stop, find the stopping distance for a car traveling 70 mph.
s1/r1^2 = s2/r2^2
=> 80/1225 = s2/4900
=>s2 = 320 ft