Physics (As Level) 12 Grade
posted by Adam .
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
a=v²/2s
v= v₀at
v=0
t= v₀/a 
Physics (As Level) 12 Grade 
Adam
Not really helping much. A slightly worked example would be effective. But thanks anyway.

Physics (As Level) 12 Grade 
Elena
a=v²/2s = 40²/2•860=0.93 m/s²
v= v₀at
v=0
t= v₀/a =40/0.93 =43.01 s. 
Physics (As Level) 12 Grade 
Adam
Yes, thank you. I worked it out, after a few minutes. Anyway, thank's a lot :)
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