Quiz5C -   DL section _ Grade: Last 6 digits of...

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Unformatted text preview:   DL section _ Grade: Last 6 digits of student ID ______ 05/04/11 Last name , first name: ________________ ________________ First three letters of your last name ___                   Fexternal  t = Net Impulseexternal =  p=mv               !    " # $%    &%!   &% '( ! )* #!   #%* %$( You know that the net force is zero, which means that F_1 + F_2 + F_3 = 0 You know that the F_1 is vertical and F_2 is horizontal, then F_3.y = - F_1 = - 50 N Because it's a 45 deg triangle then the two short sides have the same length and w e can solve for |F_3| = sqrt (50^2 + 50^2) = 70.1 N !    "%* %$( You know that the net force is zero, which means that F_1 + F_2 + F_3 = 0 F_3 = - F_1 - F_2 Because the angle is 45 degrees then |F_2| = |F_1| = 50 N " + ''    '&  *    #$% ,-.'  - '$ / * ''%!*  *    %   '' '%0#$%12% '  " $%0 &'  '  %' 1  !3% * % &$! ''     ' *  *      '   '     '%''$ '  & *  '* p.in = m v = 65 kg 4 m/s = 260 N s p.fin = 65 kg 20 m/s = 1300 N s Delta (p) = p.fin - p.in = (1300 - 260) N s = 1040 N s p.in You Delta (p) P.fin 260 N s 1040 N s 1300 N s !4*  &5.)'   No. Your velocity is increasing and that changes your momentum (your mass is the same). ...
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This note was uploaded on 10/24/2011 for the course PHYSICS 7B taught by Professor Johnconway during the Spring '07 term at UC Davis.

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