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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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
Transcribed Image Text:Problem B) Amy gets on a high speed train that is sitting in the station. As it starts to accelerate at a
constant rate out of the station, Amy watches a heavy cord that is hanging from the ceiling make a 0 = 22°
angle with respect to the vertical (see image below). If the train has a constant acceleration for 20 seconds
before reaching a constant velocity, what is the speed of the train on her trip (i.e., the velocity reached after
20s of acceleration)?
Cord
Direction of motion of train
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