College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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You are driving your 1450-kg car on a straight highway at 67 mph when a deer jumps out into the middle of the road in front of your car. You have a quick reaction time of 0.60 seconds before applying the brakes which slow your car for 2.36 seconds before you enter a skid. Your car then skids for 39.4 m before coming to a stop. Assuming a coefficient of kinetic friction between the tires and the road of 0.45, find
(a) the acceleration rate you had while the brakes were applied prior to the skid,
(b) the total distance the car traveled from the moment the deer jumped to when the car stopped,
(c) the work done by the brakes, and the work done by friction during the skid.
Transcribed Image Text:You are driving your 1450-kg car on a straight highway at 67 mph when a deer
jumps out into the middle of the road in front of your car. You have a quick reaction
time of 0.60 seconds before applying the brakes which slow your car for 2.36
seconds before you enter a skid. Your car then skids for 39.4 m before coming to a
stop. Assuming a coefficient of kinetic friction between the tires and the road of
0.45, find
(a) the acceleration rate you had while the brakes were applied prior to the skid,
(b) the total distance the car traveled from the moment the deer jumped to when
the car stopped,
(c) the work done by the brakes, and the work done by friction during the skid.
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