
Concept explainers
To explain: whether the speedingcar before applying the brakes on a dry, concrete road.

Explanation of Solution
Given information:
In the formula
Calculation:
From the table, the value of
Given formula is
Since length of the skid mark is 100 feet, the car was travelling at least 49 mph before the driver applied the brake.
It was not for the collision, the car would have been longer and the car would have been travelling at a higher rate than 55 mph.
So, the car may have been speeding.
Chapter 10 Solutions
Pre-Algebra, Student Edition
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