Thank you for visiting When measuring crash skid marks you should A Guess the length of any one skid mark B Measure only the longest skid mark C Measure. This page is designed to guide you through key points and clear explanations related to the topic at hand. We aim to make your learning experience smooth, insightful, and informative. Dive in and discover the answers you're looking for!
Answer :
To accurately determine a vehicle's speed from skid marks, it's essential to record each skid mark's length and consider the friction coefficient and gravity. Therefore, the correct answer is option D. Record the length of each skid mark left by the crash vehicle.
When measuring crash skid marks, the correct approach is to record the length of each skid mark left by the crash vehicle. This is essential for accurately determining the speed of the vehicle at the beginning of the skid, expressed as v. To precisely calculate the speed v, one must consider not only the length L of the skid marks but also other variables such as the coefficient of friction between the tires and the road, and the acceleration due to gravity g. The basic formula used is v = (2 x g x L)^0.5, which is derived from the physics of uniform acceleration.
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