Recent content by youagain

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    Truck vs Tree (first week physics woes)

    I think its just my formating making it look wrong? is 26.617 m/s the right answer?
  2. Y

    Truck vs Tree (first week physics woes)

    Wait V=Vo+at so 26.617+(-5.6x4.2) = 3.097 does he hit the tree at 3.097 m/s?
  3. Y

    Truck vs Tree (first week physics woes)

    x-(1/2)at2/t=vo 62.4-(1/2)-5.6x4.22 /4.2 = 26.617 m/s So that's his initial speed right? I still don't understand how to get his final speed?
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    Truck vs Tree (first week physics woes)

    Man i am defenitly going to need to work on knowing which formulas are for which... ummm using that...x=vo2+1/2at2 vo2= x-1/2at2 So vo = square root x-1/2at2square root of 62.4-(-5.6x4.22)/2= 10.573 So he hits the tree at 10.58 m/s?EDIT: Wait did I miss out a t? let me try that again...
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    Truck vs Tree (first week physics woes)

    1. The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows down uniformly with an acceleration of -5.60 m/s2 for 4.20s making skid marks 62.4m long that end at the tree. With what speed does the truck strike the tree? Homework Equations I'm guessing that...