SOLUTION: Solve for k, give the equation of variation, and solve the problem. The stopping distance "d" of a car after the brakes have been applied varies directly as the square of the spee

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Solve for k, give the equation of variation, and solve the problem. The stopping distance "d" of a car after the brakes have been applied varies directly as the square of the spee      Log On

 

Hi,

Let k represent the constant of the direct variation

D = kr^2

2000/60^2 = k = .56

d = .56r^2

 = 11.3mph