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test091p2

# test091p2 - G><:=&51~5Db~[>(rj,6Do 8 B(b3cfw = f,StYt6oo A...

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G><.:=-&51~5Db~- [>(rj,6 D o 8,:::: B(b3{)' =- f!,StYt6 o o A ~ ~ 9)Referto Figure 1.The components ofvectors A and Bare A) A x ~ A cos90° B x ~ Bsin60° A Y ~A sin90° B)A x ~ 0 B x ~ Bsin 30° A Y ~ 0 C) A x ~ A cos90° B x ~ 0 A Y ~A sin90° 0) A x ~ A sin 90 0 B x ~ Bcos60° A Y ~ A cos90° @A x ~A cos0° B x ~ -Bcos60° A Y ~A cos90 0 B Y ~Bcos60°. B y ~Bcos30°. B y ~O B Y ~ Bsin60 0 B Y ~Bcos30°. 10) Anathlete competing inlongjump leaves the ground with aspeed of9.14m/s atan angle of 35.0°above the horizontal. tisthe length ofthe athlete's jump? A) 16.8m 8.01m C)4.01m 0) 0.876m E)12.0m ,-------------/ 11) Anobjectisthrown upwards with aspeed of 13 m/ s.How long does ittake toreach aheight of 4.~ve the projection point while descending? ~ B) 4.2s C)1.2s 0)0.42s E)3.1s 9) E 10) 11)~ ~ ~ 12)Vector A ~ 8.0m and points 30 0 north ofeast,Vector B ~6.0mand points 30°west ofnorth, ~ ~ ~ ~ and vector C ~5.0mand points 30°west ofsouth. Theresultant vector A + B + C isgiven by ~ JC~ ~5.9 matan angle 74°north ofeast.
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