Solve Basic Vector Problem: Hawk Speed & Shadow Speed in m/s

  • Thread starter Thread starter olliepower
  • Start date Start date
  • Tags Tags
    Vector
AI Thread Summary
To calculate the speed of a hawk's shadow on the ground when diving at 4.24 m/s at an angle of 61.7 degrees below the horizontal, the x component of the velocity vector is needed. The calculation using the formula A_x = A cos(θ) yields 2.01013 m/s. However, the user reports this answer was marked incorrect in their homework program. It is suggested to consult a professor for clarification on the calculation or potential errors in the homework system. Understanding the correct application of vector components is crucial for solving this problem accurately.
olliepower
Messages
8
Reaction score
0

Homework Statement



When the Sun is directly overhead, a hawk dives toward the ground at a speed of 4.24 m/s

If the direction of his motion is at an angle of 61.7 below the horizontal, calculate the speed of his shadow along the ground

Answer in units of m/s

Homework Equations



A_x = A cos\theta


The Attempt at a Solution



I will want to find the x component of the velocity vector.

4.24 Cos (-61.7) = 2.01013

I put this answer into my homework program (Quest) and it was wrong. What am I missing here?
 
Physics news on Phys.org
Welcome to PF, Ollie. Your calc seems correct to me.
Sounds like a good opportunity to visit your prof.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Thread 'Trying to understand the logic behind adding vectors with an angle between them'
My initial calculation was to subtract V1 from V2 to show that from the perspective of the second aircraft the first one is -300km/h. So i checked with ChatGPT and it said I cant just subtract them because I have an angle between them. So I dont understand the reasoning of it. Like why should a velocity be dependent on an angle? I was thinking about how it would look like if the planes where parallel to each other, and then how it look like if one is turning away and I dont see it. Since...

Similar threads

Replies
5
Views
6K
Replies
21
Views
1K
Replies
4
Views
1K
Replies
5
Views
20K
Replies
6
Views
1K
Replies
4
Views
2K
Replies
4
Views
2K
Back
Top