A light plane must reach a speed of 40m/s for takeoff. Part A How long a...

Question

Question

A light plane must reach a speed of 40m/s for takeoff.

Part A

How long a runway is needed if the (constant) acceleration is 2.8m/s2 ?

science physics

Answer 1

Answer #1

v^2 = v0^2 + 2 a x

40^2 = 0^2 + 2 *2.8*x

x = 40^2/(2*2.8)= 285.7 m

Answer 2

Answer #2

We know,

$v^{2}=u^{2}+2ad$

here u=0 as planes usually starts from rest for take off.

$40^{2}=0^{2}+2\times 2.8d$

d=285.71 m

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Answer 3

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