Posted by **Adam** on Wednesday, January 30, 2013 at 6:07pm.

2) An aircraft lands on a runway at a speed of 40 meters per second (ms^-1) and brakes to a halt in a distance of 860m. Calculate a) The Braking time. B) The deceleration of the aircraft.

- Physics (As Level) 12 Grade -
**Elena**, Wednesday, January 30, 2013 at 6:11pm
a=v²/2s

v= v₀-at

v=0

t= v₀/a

- Physics (As Level) 12 Grade -
**Adam**, Wednesday, January 30, 2013 at 6:13pm
Not really helping much. A slightly worked example would be effective. But thanks anyway.

- Physics (As Level) 12 Grade -
**Elena**, Wednesday, January 30, 2013 at 6:43pm
a=v²/2s = 40²/2•860=0.93 m/s²

v= v₀-at

v=0

t= v₀/a =40/0.93 =43.01 s.

- Physics (As Level) 12 Grade -
**Adam**, Monday, February 11, 2013 at 4:11pm
Yes, thank you. I worked it out, after a few minutes. Anyway, thank's a lot :)

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