a. In investigating an acccident, police find skid marks left by a car as the driver slammed on the brakes and the car skidded to a halt. The skid marks form a straight line 3.9375 m long on a flat road. It was raining and the coefficient of friction was 0.32125. The mass of the car is 1486.75 kg. What is the angle between the friction force and the displacment of the car? 180 Previous submissions: b. Using W = F Ax cos 8, what was the work done by friction? -18430.10 Previous submissions: c. What was the AKE? J v incorrect incorrect

a. In investigating an acccident, police find skid marks left by a car as the driver slammed on the brakes and the car skidded to a halt. The skid marks form a straight line 3.9375 m long on a flat road. It was raining and the coefficient of friction was 0.32125. The mass of the car is 1486.75 kg. What is the angle between the friction force and the displacment of the car? 180 Previous submissions: b. Using W = F Ax cos 8, what was the work done by friction? -18430.10 Previous submissions: c. What was the AKE? J v incorrect incorrect

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

10.
a. In investigating an acccident, police find skid marks left by a car as the driver slammed on the brakes and the car skidded to a halt. The skid marks form a straight line 3.9375 m long on a flat road. It was raining and the
coefficient of friction was 0.32125. The mass of the car is 1486.75 kg. What is the angle between the friction force and the displacment of the car?
180
Previous submissions:
b. Using W = F Ax cos 0, what was the work done by friction?
-18430.10
Previous submissions:
c. What was the AKE?
-18430.10
Previous submissions:
d. What was the initial velocity of the car? Take this to be positive.
4.97
J
J
m/s
incorrect
incorrect
V incorrect
incorrect

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