A police investigator arrives at an accident scene where he finds that a gray 1000-kg Honda Civic has collided with a red 2000-kg SUV. From the skid marks, he is able to determine that the Honda was initially travel ing due east when the driver hit the brakes, while the SUV was going due north. After the collision, the Honda skidded 37 east of north (what other angle could it bel) for a distance of 3.5 m, whife the SUV skidded 37 north of east for a distance of 4.0 m. The pre-collision skid marks of the Honda 435 m 37 215 m are 43.5 m Idng and the pre-collision skid marks of the SUV are 21.5 m long, as shown. The coefficient of friction of Honda tires with the pavement is 0.7, while that of the SUV tires is 0.8. Help the investigator work out the initial speeds of the two vehicles before they hit their brakes. a) From the lengths of the skid marks after the collision, find the speeds of cach vehide just after the collision. b) Use conservation of momentum during the collision to find the speed of each vehicle just before the collision. (Hint: Remember that momentum is a vector.] ) From the lengths of the skid marks before the collision, determine the initial speeds of the two vehicles before they hit their brakes
A police investigator arrives at an accident scene where he finds that a gray 1000-kg Honda Civic has collided with a red 2000-kg SUV. From the skid marks, he is able to determine that the Honda was initially travel ing due east when the driver hit the brakes, while the SUV was going due north. After the collision, the Honda skidded 37 east of north (what other angle could it bel) for a distance of 3.5 m, whife the SUV skidded 37 north of east for a distance of 4.0 m. The pre-collision skid marks of the Honda 435 m 37 215 m are 43.5 m Idng and the pre-collision skid marks of the SUV are 21.5 m long, as shown. The coefficient of friction of Honda tires with the pavement is 0.7, while that of the SUV tires is 0.8. Help the investigator work out the initial speeds of the two vehicles before they hit their brakes. a) From the lengths of the skid marks after the collision, find the speeds of cach vehide just after the collision. b) Use conservation of momentum during the collision to find the speed of each vehicle just before the collision. (Hint: Remember that momentum is a vector.] ) From the lengths of the skid marks before the collision, determine the initial speeds of the two vehicles before they hit their brakes
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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