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Dimensional Motion with Constant Acceleration

A jet plane lands with a speed of 100m/s and can accelerate at a maximum rate of -5.00m/s squared as it comes to rest. (a) From the instant the plane touches therunway, what is the minimum time needed before it can come to rest? (b) Can this plane land on a small tropical island airport where the runway is 0.800km long?
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Answer #1
initial velocity v = 100 m/s, a = -5.00m/s2, final velocity = 0
a) t = (0 - v)/a = 20.0 s
b) displacement d = (0 - v2)/(2a) = 1000 m = 1.000km
∴this plane can'tland on a small tropical islandairport where the runway is 0.800kmlong.
answered by: neasha
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