   Chapter 2, Problem 31P

Chapter
Section
Textbook Problem

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?

(a)

To determine
The acceleration experienced by the aircraft.

Explanation

Given Info: The initial velocity of the aircraft is 0 , the final velocity of the aircraft is 120km/h , and the displacement of the aircraft is 240m .

Explanation:

The formula used to calculate the acceleration of the aircraft is,

a=vf2vi22Δx

Here,

Δx is the displacement of the aircraft

vf is the final velocity of the aircraft

vi is the initial velocity of the aircraft

a is the acceleration of the aircraft

Substitute 0 for vi , 120km/h for vf , and 240m for Δx to find a

(b)

To determine
The time required to travel the distance.

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