Kinematics Vectors and cartesian coordinates. Plane with wind blowing.

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SUMMARY

The discussion focuses on solving a kinematics problem involving an airplane flying at an airspeed of 300 miles per hour toward the southwest, while encountering a headwind of 75 miles per hour from the east. The key equations used include the velocity vector formula V = (w - Va/sqrt2)i + (-Va/sqrt2)j and the direction calculation θ = 180 + arctan|Vy/Vx|. The objective is to determine both the ground speed and the angle of motion relative to due east. Participants emphasize the importance of decomposing vectors into their x and y components for accurate calculations.

PREREQUISITES
  • Understanding of vector decomposition in two dimensions
  • Familiarity with trigonometric functions, specifically arctan
  • Knowledge of kinematic equations related to velocity and speed
  • Basic proficiency in using Cartesian coordinates for vector representation
NEXT STEPS
  • Study vector decomposition techniques in physics
  • Learn about the application of trigonometric functions in vector analysis
  • Explore the concept of relative velocity in different reference frames
  • Investigate real-world applications of kinematics in aviation
USEFUL FOR

This discussion is beneficial for students studying physics, particularly those focusing on kinematics, as well as educators and anyone interested in understanding vector analysis in real-world scenarios such as aviation dynamics.

freddyb
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Homework Statement



An airplane flies at an air speed of 300 miles per hour, in the direction toward southwest. There is a head wind of 75 mi/hr in the direction toward due east.
(A) Determine the ground speed.

(B) Determine the direction of motion of the plane, expressed as an angle counterclockwise from due east.


Homework Equations



Va=airspeed
w=wind speed
V=velocity relative to ground

V=(w-Va/sqrt2)i+(-Va/sqrt2)j

*i & j are constants

direction θ = 180 + arctan|Vy/Vx|



The Attempt at a Solution



Totally stumped any help would be greatly appreciated!
 
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Decompose vector 1 into x & y components, add vector 2, recompose into final vector.
 

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