test1s3y10p2 - 7 Two objects are dropped from a bridge an...

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Unformatted text preview: 7) Two objects are dropped from a bridge, an interval of 1.0 s apart. During the time that both 7) D objects continue to fall, their separation A) increases at first, but then stays constant. Y7K: : l 5 [if ’11?) 2/ 7 f I :2. J: 75‘ B) decreases. . L 2 g 2. C decreases at first, but then stays constant. ‘ _ ,6 4. __I ' Z__ .6 ' 6 ‘ 2 5‘ f. 2 <4, 3 ’ F . _ ‘ 2. ‘ ' E) stays constant yf/ 741 :Kg {9'43 __2_[j {i 755V {f7 4!, 8) A runner runs around a track consisting of two parallel lines 96 m long connected at the ends by 8) 8 two semicircles with a radius of 49 m. She completes one lap 1n 100 seconds. What 15 her average velocity? \/ AX/A‘e AJAX— ’0 A)2.5m/s W§z C)10m/s / D)5.0m/s E)l.3m/s 9) An airplane starts from rest and accelerates at 10.8 m /52. What is its speed at the end of a 400 9) I l m—l- n; -'. vv. ? B) 186 m/s C) 4320 m/s D) 65.7 m/s E) 37.0 m/s —> —> —) -> C. 10) Vectors M and N satisfy the equation M + N = 0. These vectors satisfy one of the following 10) statements. A)Th 'td fa'tw' th 'td f1? j 3 emagmu e0 15 me emagniu eo . fie...” —> —> A B) Vectors M and N are at right angles to each other. [A ( h] / N I r i C) Vectors M and N have the same lengths. ) D) Vectors M and N point in the same direction. -) -) E) The magnitude of M is the negative of the magnitude of N. e -> E 11) A vector A has components Ax = 12 m and Ay = 5.0 111. What is the magnitude of vector A ? 11) A) 7.0 m B) 60 m C) 17 m D) 169 m E 13 6]) \/‘v:o/ ax (”Dim/5'1} él*:0/ )4-ng X7” [mom \‘rl=V1+24X(X)~;:/)<) 2a,) ,zam)axw>-%aog V): 42.6? _, 43 010/5 AWW/Té—zij’m ...
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