Algebra Problem 35
Skidding to a Stop

Heather was driving at 35 mph when a ball rolled into the street in front of her.  She slammed on her brakes.  and skidded to a stop. Heather got out and saw her car was about 10 feet from hitting the ball.

The length required to skid to a stop can be approximated by using the speed and the length of the car in the formula 17S/20 + L, where S is the speed in miles per hour and L is the length of the car in feet.

How much faster could Heather have been traveling and still have stopped before hitting the ball?  (Round to the nearest whole mph).

Math Scoring Guide
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Name: ________________________ Period: ____
Teacher: ______________________

Date: ___/____/___
CU - Conceptual Understanding 1 2 3 4 5 6

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PS - Processes & Strategies 1 2 3 4 5 6

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V - Verification 1 2 3 4 5 6

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C - Communication 1 2 3 4 5 6

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ACC - Accuracy 1     4 5  

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