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# quiz3 - Quiz 3 Summer 2005 Mechanics...

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Unformatted text preview: Quiz 3 Summer 2005 Mechanics: Dynamics [l4:44ﬂ:222:Bl] ﬂdfldfﬂll 1. Boxes are transported by a conveyor belt with a velocity vuto a fixed incline at A where they slide and eventually fall off at B. Knowing that pk = H.413, determine the velocity of the conveyor belt if the boxes leave the incline at B with a velocity of Baits. 2.. The last segment of the triple Jump track- -and-ﬁeld event is the Jump, in which the athlete makes a ﬁnal leap, landing in a sand- ﬁlled pit. Assuming that the velocity of a 84kg athlete just before lending is 9.141111% at an angle of 35° with the horizontal and that the athlete comes to rest to a complete stop in l]. 223 after landing, determine the horizontal component“ of the iaﬂerage impulsive force excited on his feet dpnng landing 1 1 35;. ' ..._ 9” T“ i “mi mam-es mm *- 23? M: “W W; \l'ﬁit‘o ﬂ (“New 41* Eva th—ktfh at E. : 3:111; :(‘eutsl‘l'lllmsﬁdﬂa WE?" “(T-.3 M case 1.._p_ L1; _. up 1 (Extra Practice)]11 a case of oblique central impact, the magnitude and direction of the velocities of two identical frictionless balls before they strike each other are as shown Assuming the collision is perfectly elastic (e— = 1 .tlﬂ), determine the magnitude and di ection of the velocity of each ball after the impact 1:.3 f‘ﬂfh‘ll‘a Fﬁjﬁt “(han‘tﬁf'lgen :- WK ‘lr MEL-153:1 In “M Elﬁn +~islﬁtt -— “Filo *K‘Bn‘ ‘61 Of-lllg Id 5 vAISUst vﬂsmac UH _ 3+ :ﬁ-léf'llj an 153:" 1 E (Us-1f. Us) st“ sols-es shag H1: 15:; _ :15 H5929 1&5“- 1194+qu \lces accuses val-flesh Vg— cc 1. l?) in,“ 2 _L} uﬁh:~t{ﬂt:ﬁhﬂ°=‘ so Hg 19* 35w ‘55- ‘3‘3 ,1 . "310F418 C‘Hfl mmmwm IKE ”Fl-t?) '95251345 géiib P61319- - adapt/g :3: hat: . , 1.3st ...
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