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November 29, 2014

November 29, 2014

Posted by **ty** on Thursday, December 20, 2012 at 10:00am.

- physics -
**Elena**, Thursday, December 20, 2012 at 10:40amv1=a1•t1=5.9•4=23.6 m/s

v2= a2•t2 = 4.4•6.5 = 28.6 m/s

τ1 =s/v1 =200/23.6=8.47 s.

τ2 =s/v2 =200/28.6=6.99 s

the total time

for the 1st runner 4+8.47 = 12.47 s.

fir the 2nd runner 6.5+6.99 = 13.49 s

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