Adding Vectors using Cefore Method

AI Thread Summary
The discussion revolves around calculating the resultant velocity of a bird in flight, factoring in its airspeed and wind conditions. The bird's airspeed is 12.6 m/s at an angle of 27.7° west of north, while the wind speed is 8.95 m/s at 12.5° south of west. Participants encourage the poster to share their calculations to identify any mistakes in their vector addition. The consensus is that the problem requires careful vector addition to determine the correct resultant velocity. Accurate calculations are essential for resolving the issue effectively.
hsadiq98
Messages
4
Reaction score
0
Homework posted in wrong forum, so no template
A bird is flying through the air with an air speed of 12.6 m/s heading 27.7° west of north. It is a windy day with the wind blowing at 8.95 m/s heading 12.5° south of west. What is the velocity of the bird as seen by a person on the ground?
Note: I keep doing this question but my answer (the resulting vector) don't come out correct. Any help is appreciated.
 
Physics news on Phys.org
Looks like regular vector addition to me. Maybe if you post your attempt we could help you spot what went wrong
 
Yes, please show your working, even though you know it's wrong. Someone here can probably point out your error(s).
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top