Asked by toqa

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.

Answers

Answered by 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.

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