Homework Help: physics

Posted by jc on Tuesday, September 14, 2010 at 7:28pm.

A jet plane lands with a speed of 101 m/s and can accelerate at a maximum rate of -4.60 m/s2 as it comes to rest.
(a) From the instant the plane touches the runway, what is the minimum time needed before it can come to rest?
___s

b)What is the actual minimum distance needed to stop the plane?
___km

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