a volvo moving at a constant speed of 20m/s passes a saab waiting at a red light just as the light turns green?

Posted by admin
asked:


if the saab begins from rest and accelerates 2m/s^2, how far does the saab travel before drawing even with the volvo? how fast is the saab traveling at this point?

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    • This entry was posted on Friday, January 13th, 2012 at 10:12 am and is filed under volvo. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

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    One Response to “a volvo moving at a constant speed of 20m/s passes a saab waiting at a red light just as the light turns green?”

    1. Steve Says:
      January 13th, 2012 at 11:45 am

      Ds = Dv

      ½at² = Vv*t → t = 20 sec

      Ds = ½*a*t² = ½*2*20² = 400 m
      Vs = a*t = 2*20 = 40 m/s