 # A racetrack is constructed such that two arcs of radius 80 m at Ⓐ and 40 m at Ⓑ are joined by two stretches of straight track as in Figure 7.8. In a particular trial run, a driver travels at a constant speed of 50 m/s for one complete lap. 1. The ratio of the tangential acceleration at Ⓐ to that at Ⓑ is (a) | (b) J (c) 2 (d) 4 (e) The tangential acceleration is zero at both points. 2. The ratio of the centripetal acceleration at Ⓐ to that at Ⓑ is (a) J (b) \ (c) 2 (d) 4 (e) The centripetal acceleration is zero at both points.| 3. The angular speed is greatest at (a) Ⓐ (b) Ⓑ (c) It is equal at both Ⓐ and Ⓑ. Figure 7.8 (Quick Quiz 7.6) ### College Physics

11th Edition
Raymond A. Serway + 1 other
Publisher: Cengage Learning
ISBN: 9781305952300 ### College Physics

11th Edition
Raymond A. Serway + 1 other
Publisher: Cengage Learning
ISBN: 9781305952300

#### Solutions

Chapter
Section
Chapter 7.3, Problem 7.6QQ
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