- #1
ellieee
- 78
- 6
- Homework Statement
- qn (di)-> the graph is a v-t graph, so shouldn't we say "constant velocity" instead of "speed"?
- Relevant Equations
- nil
Can you use speed and velocity interchangeably?
AI Thread Summary
Speed and velocity are closely related concepts, particularly in one-dimensional motion, where they can often be used interchangeably. Speed refers only to magnitude, while velocity includes direction, which is crucial for understanding motion. In a straight line, if speed is x, velocity can be either x or -x, but this relationship does not apply to other types of motion, such as circular motion. The discussion highlights the importance of accurately interpreting graphs, particularly velocity-time graphs, to determine the nature of the motion. Accurate labeling of such graphs is essential for confirming that the motion is indeed linear.
- #2
Doc Al
Mentor
- 45,578
- 2,437
Yes. It's better to describe it as constant velocity, as speed just describes the magnitude and not the sign. (I presume this is one-dimensional motion.)
- #3
Delta2
Homework Helper
- 6,002
- 2,628
In motion in a straight line such as in your example, the concepts of velocity and speed are almost identical: If speed is x, then velocity will be x or -x. I repeat, this holds only in motion in a straight line, it does not hold for other motions e.g. circular motion.
- #4
ellieee
- 78
- 6
how can you tell it's in a straight line ?Delta2 said:
Last edited by a moderator:
- #5
Delta2
Homework Helper
- 6,002
- 2,628
I can not infer it from the given data (the screenshot of the graph isn't complete, doesn't completely show the text that describes the graph), somehow I thought it was given to you.ellieee said:
- #6
Doc Al
Mentor
- 45,578
- 2,437
Since they label it a velocity-time graph, where the velocity is constant it must be moving in a straight line. (Assuming it's labeled accurately.)ellieee said:
Hello guys this is what I tried so far. I used the UTS to calculate the force it needs when the rope tears.
My idea was to make a relationship/ function that would give me the force depending on height. Yeah i couldnt find a way to solve it.
I also thought about how I could use hooks law (how it was given to me in my script) with the thought of instead of having two part of a rope id have one singular rope from the middle to the top where I could find the difference in height.
But the...
Here is what I tried
This question was actually asked in one of our engineering entrances.
The answer was 1D.
My teachers say that we have to use μₘ/fₘ to get to this answer. I cannot understand why. I'll be really glad if you could tell me the exact definition of power (numerically) that works in all scenarios.
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...
Similar threads
Hot Threads
-
Work Done in slowly pulling a thread
- Started by Bling Fizikst
- Replies: 28
- Introductory Physics Homework Help
Recent Insights
-
Insights Thinking Outside The Box Versus Knowing What’s In The Box
- Started by Greg Bernhardt
- Replies: 3
- Other Physics Topics
-
Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality
- Started by Greg Bernhardt
- Replies: 28
- Quantum Interpretations and Foundations
-
Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect
- Started by Greg Bernhardt
- Replies: 11
- Quantum Physics
-
Insights What Exactly is Dirac’s Delta Function? - Insight
- Started by Greg Bernhardt
- Replies: 3
- General Math
-
Insights Relativator (Circular Slide-Rule): Simulated with Desmos - Insight
- Started by Greg Bernhardt
- Replies: 1
- Special and General Relativity
-
Insights Fixing Things Which Can Go Wrong With Complex Numbers
- Started by PAllen
- Replies: 7
- General Math