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Required information

Problem $12\mathrm{.}009-$ Braking distance of an automobile on a level pavement

An automobile's braking distance from $108k\frac{m}{h}$ is $85$ m on level pavement. Assume the braking force is independent of

grade.

Problem $12\mathrm{.}009.$b $-$ Braking distance of the automobile going down on an incline

Determine the automobile's braking distance from $108k\frac{m}{h}$ when it is going down a $3-$percent incline.

The automobile's braking distance from $108k\frac{m}{h}$ when it is going down a $3-$percent incline is

m $.$