What is the Instantaneous Velocity Question and How to Solve It?

AI Thread Summary
The discussion centers on solving a homework question related to instantaneous velocity. The user initially miscalculated the velocity due to a misunderstanding of the graph's details, mistaking the tip of the line for a different value. It was clarified that when interpreting graphs, especially with thick lines, one should read to the middle and use a ruler for accuracy. The importance of showing work in problem-solving was emphasized to facilitate better assistance. Overall, the conversation highlights common challenges in understanding instantaneous velocity and graph interpretation.
Jane W
Messages
2
Reaction score
0

Homework Statement


I am having trouble with the last question my teacher gave me. I have attached a picture. It is about instantaneous velocity. I did the same thing for all the other questions?[/B]

Screen Shot 2014-09-25 at 7.50.10 PM.png


Homework Equations


average velocity = delta x / delta t

The Attempt at a Solution


I did 0-(-6)/(8-7) = 6[/B]
 
Physics news on Phys.org
I figured it out. Apparently the tip of the line is not on 6 but on 5. I think that is not very visible.
 
Well done :)
When graphs have a fat line, the pointy-bits can cover a lot of ground. Always read to the middle of the line - use a ruler if you can.
For the future - please show your working. That would make how you are thinking clear so we can best help you.
Don't worry about looking stupid - we have all done stupider things than you: we understand ;)
 

Thread 'Rolling without slipping on a curved surface'

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 .
View full post »
Thread 'Voltmeter readings for this circuit with switches'

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...
View full post »
Thread 'Trying to understand the logic behind adding vectors with an angle between them'

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...
View full post »

Similar threads

Momentum: instantaneous or average?
Replies
9
Views
1K
Calculate Distance Traveled: Instantaneous vs. Average Velocity
Replies
5
Views
2K
Conceptual problem in average/instantaneous velocity
Replies
4
Views
2K
Can instantaneous velocity be different from average velocity?
Replies
11
Views
2K
Condition for Instantaneous Acceleration = Average Acceleration
Replies
3
Views
2K
How Do You Calculate Instantaneous Velocity at a Midpoint in Particle Motion?
Replies
7
Views
3K
Instantaneous angular speed question
Replies
1
Views
1K
How to Find Instantaneous Velocity Using Force
Replies
2
Views
1K
Instantaneous speed and velocity
Replies
14
Views
10K
Determine the Magnitude of the instantaneous Velocity
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top