Posted by Jaeka on Wednesday, January 12, 2011 at 7:37pm.
A jet plane lands with a speed of 110 m/s and can decelerate uniformly at a maximum rate of 5.7m/s^2 as it comes to rest.
Can this plane land at an airport where the runway is 0.91 km long?
I have to answer by Calculating...HELP!

science  Henry, Thursday, January 13, 2011 at 5:02pm
Vf^2 = Vo^2 + 2ad = 0,
(110)^2 + 2 * (5.7)d = 0,
12100  11.4d = 0,
11.4d = 12100,
d = 12100 / 11.4 = 1061.4m = 1.061km.
NO, the runway is too short
NOTE:Check your 11111,7:44pm post.
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