Question
An aeroplane lands on the runway at velocity 180km/hour and decelerates at 0.4 m/s^2
find the time taken until it stops and the displacement.
find the time taken until it stops and the displacement.
Answers
Henry
Vo = 180000,/3600s. = 50 m/s.
a. V = Vo + a*t = 0.
t =-Vo/a = -50/-0.4 = 125 s.
b. D = Vo*t + 0.5a*t^2.
D = 50*125 - 0.2*2500 = 3125 m.
a. V = Vo + a*t = 0.
t =-Vo/a = -50/-0.4 = 125 s.
b. D = Vo*t + 0.5a*t^2.
D = 50*125 - 0.2*2500 = 3125 m.