??19% D Tue 1:02 PM ao View History Bookmarks Window Help Fullerton- CHEM 123-Sp

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??19% D Tue 1:02 PM ao View History Bookmarks Window Help Fullerton- CHEM 123-Springt WileyPLUS: MywileyPLUS US Maliday, Fundamentals of Physics, 10e FUNDAMENTAL PHYSICS (PHYS 225/226/227) Practice Gradebook ORION Downloadable eTextbook ssignment Chapter 09, Problem 022 The figure gives an overhead view of the path taken by a 0.166 kg cue ball as it bounces from a rail of a pool table. The balir's initial speed is 1.47 m/s, and the angle 6, is 61.5. The bounce reverses the y component of the balrs velocity but does not alter the x component. What are (a) angle 02 and (b) the magnitude of the change in the ball's linear momentum? (The fact that the ball rolis is Irrelevant to the problem.) elem (a) Number (b) Number Click if you would iike to Shvow Work for this questiomi Open Show Work Units Units ns by Stuty Prtsahicy 2009:20asem nier Sons.Inc. All Rights Reserved. A Division of ben mer & Sons.?nc. MacBook Pro

Explanation / Answer

(A) theta_2 = theta_1 = 61.5 deg

(B) vi = 1.47 (cos61.5i + sin61.5j)

vf = 1.47 (cos61.5i - sin61.5j)

change in momentum = m (vf - vi)

= 0.166 ( -2 x 1.47 x sin61.5 j)

= - 0.429 j

magnitude = 0.429 kg m/s

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