While driving at 45.0 mi/hr (20.1 m/s) on a straight portion of Route 9 West, Randi notices that the traffic light has turned red at the intersection directly ahead. Randi applies his brakes, slows his car down at a steady rate, and brings his car to rest, while traveling the 60.0 m distance to the stop line (at the red light). 21. While he is slowing down, the acceleration of Randi's car has a magnitude of A. 6.73 m. "/ . B. 16.9 D. 980 m/2 C. 33,8 m E. 337 m/
While driving at 45.0 mi/hr (20.1 m/s) on a straight portion of Route 9 West, Randi notices that the traffic light has turned red at the intersection directly ahead. Randi applies his brakes, slows his car down at a steady rate, and brings his car to rest, while traveling the 60.0 m distance to the stop line (at the red light). 21. While he is slowing down, the acceleration of Randi's car has a magnitude of A. 6.73 m. "/ . B. 16.9 D. 980 m/2 C. 33,8 m E. 337 m/
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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
Transcribed Image Text:While driving at 45.0 mi/hr (20.1 m/s) on a straight portion of Route 9 West, Randi notices that the traffic light has turned red
at the intersection directly ahead. Randi applies his brakes, slows his car down at a steady rate, and brings his car to rest,
while traveling the 60.0 m distance to the stop line (at the red light).
21. While he is slowing down, the acceleration of Randi's car has a magnitude of
A. 6.73 m,
В. 16.9 m
2.
169 m/:
А.
С. 33,8 т
D. 9.80 m
E. 3.37 m
/
22. How much time passes as Randi's car slows down from 45.0 mi/hr to 0 m/s?
A. 20.68 s.
B. 5.97 s.
C. 2.66 s.
D. 2.99 s.
E. 0.596 s.
23. While Randi's car is slowing down, his car's acceleration is
A. directed straight down towards the Earth's center.
B. equal to zero.
C. directed straight upwards.
D. directed parallel to the car's velocity.
E. directed antiparallel to the car's velocity.
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