Crossing Runways Physics Problem?

smalltown5

New member
A Boeing 747 "Jumbo Jet" has a length of 59.3 m. The runway on which the plane lands intersects another runway. The width of the intersection is 23.3 m. The plane decelerates through the intersection at a rate of 5.51 m/s2 and clears it with a final speed of 46.6 m/s. How much time is needed for the plane to clear the intersection?
 
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