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A Cessna aircraft has a liftoff speed of 120 km/h .
(a) What minimum constant acceleration does the aircraft require if it is to be airborne after a takeoff run of 240 m?
(b) How long does it take the aircraft to become airborne?

Respuesta :

the equation for acceleration  is the ff:
2ad = V2^2 V1^2

V1 = 0
V2 = 120 km/h = 33.33 m/s
d = 240

inputting into the equation you get 2.31 m /s^2 as the acceleration

for B use another acceleration equation
a = change in V/ change in time

2.31  = (33.33 - 0) / (t2 - 0)
t2 = 14.43 seconds

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