A train running at a certain speed takes 20 seconds to cross a signal post and 50 seconds to cross a bridge. Which of the following statements is correct about the length of the bridge?

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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. A train running at a certain speed takes 20 seconds
to cross a signal post and 50 seconds to crosS a
bridge. Which of the following statements is correct
about the length of the bridge?
(a) 1.5 times the length of the train
(b) 2.5 times the length of the train
(c) 30 metres more than the length of the train
(d) Cannot be determined
Transcribed Image Text:. A train running at a certain speed takes 20 seconds to cross a signal post and 50 seconds to crosS a bridge. Which of the following statements is correct about the length of the bridge? (a) 1.5 times the length of the train (b) 2.5 times the length of the train (c) 30 metres more than the length of the train (d) Cannot be determined
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