Question

An aeropla
In aeroplane lands with a velocity of 270 km/hr and comes to rest after covering a run way o
1000 m. Calculate the retardation of aeroplane
A) 2.8125m/s2B ) 3.8125 m/s C) 4.2185 m/s D) 3.2185 m/s2​

Answer 1

Initial velocity, u = 270km/h or 75m/s

Final velocity, v = 0 km/h or 0m/s { because the plane comes to rest }

Distance covered, s = 1000m

We know,

➜ 2as = v² - u²

☛ 2×a×1000 = 0 - 75²

☛ 2000a = -5625

☛ a = -5625/2000

☛ a = -2.8125

Hence, The Retardation of the plane is 2.8125 m/s²

Answer 2

Answer:

28.3

Explanation:

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