1. A purple line express car starts at Howard station at time 0, pointing north. Its velocity as a function of time (in hours) is given by v(t) = -6000t? + 1000£ miles per hour. (a) How far north does the train travel before turning around? (b) At what time does the train come back to Howard station? (c) If the train's fuel efficiency is 2 miles per gallon, how many gallons of fuel are consumed from t = 0 to t =1/2 hour?

1. A purple line express car starts at Howard station at time 0, pointing north. Its velocity as a function of time (in hours) is given by v(t) = -6000t? + 1000£ miles per hour. (a) How far north does the train travel before turning around? (b) At what time does the train come back to Howard station? (c) If the train's fuel efficiency is 2 miles per gallon, how many gallons of fuel are consumed from t = 0 to t =1/2 hour?

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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Question

1. A purple line express car starts at Howard station at time 0, pointing north. Its velocity
as a function of time (in hours) is given by
v(t) = -6000t? + 1000t
miles
per
hour.
(a) How far north does the train travel before turning around?
(b) At what time does the train come back to Howard station?
(c) If the train's fuel efficiency is 2 miles per gallon, how many gallons of fuel are
consumed from t = 0 to t =1/2 hour?

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