|May30-11, 03:05 PM||#1|
1. The problem statement, all variables and given/known data
The airspeed of a small plane is 200 km/h. The wind speed is 50.0 km/h [E]. Determine the velocity of the plane
relative to the ground if the pilot keeps the plane pointing in each of the following directions.
a) East (250 km/h [E] )
b) West (150 km/h [W] )
c) North (206 km/h [N14.0°E])
d) North 40° East (2.4e2 km/h [E41°N] )
2. Relevant equations
Sin Theta = opp/hyp where Theta = 40 deg, Hyp=200.
3. The attempt at a solution
The first three are basic. For the fourth obviously, a simple resolution of vectors won't do. If I do, I get 128, while the answer is 240. What am I doing wrong?
Sorry to sound so stupid, I am a novice at physics.
|May30-11, 04:16 PM||#2|
The Pythagorean method is only useful for adding vectors that form a right angle. What other methods of vector addition have you covered?
|May31-11, 11:06 AM||#3|
OK, I got it. Thanks. I have to use the head to tail method.
|Similar Threads for: Vector resolution|
|2-D Kinematics Vector Resolution||Introductory Physics Homework||1|
|vector resolution||Introductory Physics Homework||4|
|vector resolution and vector addition||Introductory Physics Homework||0|
|Vector Resolution - xy Plane - Airspeed/Groundspeed||Introductory Physics Homework||1|
|Relative Velocity and Vector Resolution||Introductory Physics Homework||4|