A jetliner, traveling northward, is landing with a...

A jetliner, traveling northward, is landing with a speed of 69m/s. Once the jet touches down, it has 750 m of runway in which toreduce its speed to 6.1 m/s. Compute the average accelaration(magnitude and direction) of the plane during landing
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    Answers ( 2 )

    1. julia williams
      julia williams
        
             Kinematics in One Dimension
               
                  By applying the 3rd eqation of kinamatics we can solve
                initialvelocity u = 69m / s
                finalvelocity v = 6.1 m / s
               distance travelleds during rumway = 750 m
                According to3rd eqation of kinamatics
                          v2 - u2 = 2 as      
                    The average acceleration is -3.14 m /s2
         The negative sign indicates that acceleration isdecreasing
    2. tamara webb
      tamara webb
      john made a slight roundoff error: a = -3.149, whichrounds off to -3.15 m/s2   

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