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Figure E2.12 shows the velocity of a solar-powered car as

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 12E Chapter 2

University Physics | 13th Edition

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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

University Physics | 13th Edition

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Problem 12E

Figure E2.12 shows the velocity of a solar-powered car as a function of time. The driver accelerates from a stop sign, cruises for 20 s at a constant speed of 60 km/h, and then brakes to come to a stop 40 s after leaving the stop sign. (a) Compute the average acceleration during these time intervals: (i) t = 0 to t = 10 s; (ii) t = 30 s to t = 40 s; (iii) t = 10 s to t = 30 s; (iv) t = 0 to t = 40 s. (b) What is the instantaneous acceleration at t = 20 s and at t = 35 s?

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Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

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Figure E2.12 shows the velocity of a solar-powered car as

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