The formular r= 2 cube root5L can beusedto approximate the speed r,in mile per hour,of a car that has skid marks of lenght L,in feet. How far will a car skid at 60 mph.

Answer 1

r = 2 (5)^(1/3) L

60 = 2(5)^(1/3) L
30 = (5)^(1/3) L
30 = 1.709975 L
L = 17.544 feet

Answer 2

Thank you Reiny for your help.