Homework Help: Physics

Posted by Jesse on Friday, December 3, 2010 at 10:02pm.

An aircraft has a lift-off speed of 120 km/hr. What minimum constant accelerationdoes this require if the aircraft is to be airborn after a take-off run of 240 m?

Physics - bobpursley, Friday, December 3, 2010 at 10:15pm
change 120km/hr to m/s

V^2=2a*240 find a
Physics - drwls, Friday, December 3, 2010 at 10:15pm
120 km/h = 33.3 m/s

V = sqrt(2aX) = 33.3 m/s

Solve for the acceleration, a.
X = 240 m.

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