After deploying its drag parachute, a landing airplane has an acceleration a= -0.004 v² m/s². (a) Determine the time required for the velocity to decrease from 80 m/s to 20 m/s.
After deploying its drag parachute, a landing airplane has an acceleration a= -0.004 v² m/s². (a) Determine the time required for the velocity to decrease from 80 m/s to 20 m/s.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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After deploying its drag parachute, a landing airplane has an acceleration a= - 0.004 v2 m/s2.
(a) Determine the time required for the velocity to decrease from 80 m/s to 20 m/s.
(b) What distance does the plane cover during that time?
A similar airplane is accelerating forward. Due to its engines there is a propulsion force of 1500000 N. Also, there is a drag force which can be modelled as 75 v2. The mass of the airplane is 150000 kg.
(c) What is the distance covered by the airplane from when it starts accelerating (standstill) to when the velocity is 400 km/h?
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