Person moving Velocity question

  • Thread starter Thread starter TT0
  • Start date Start date
  • Tags Tags
    Velocity
AI Thread Summary
When a person moves straight and then runs in a circle around the starting point, their velocity does not remain constant due to changes in direction. Velocity is defined as displacement over time and is a vector quantity, meaning it includes both speed and direction. As the person changes direction while running in a circle, their velocity changes despite the speed potentially remaining constant. The discussion clarifies that if the person is on the right side of the circle, their velocity would be expressed as displacement over time in that direction. Overall, the key takeaway is that any change in direction alters the velocity.
TT0
Messages
210
Reaction score
3
Velocity.jpg

Hello, for the diagram above, if a person moves straight then runs in a circle around the starting point will the velocity stay constant? Since velocity is displacement/time, the displacement will be constant.

Thanks
 
Physics news on Phys.org
Velocity is a vector, meaning it has both a magnitude (speed) and direction. When you change either direction or speed, you change velocity.
See here for more: http://en.wikipedia.org/wiki/Velocity
 
  • Like
Likes TT0
I see so if the person was on the most right then his velocity would be "displacement/time right, is this correct?
 
Basically, yes.
 
  • Like
Likes TT0
Ok thank you very much
 

Thread 'Is calling fictitious forces "not real" just about terminology?'

Hi there, im studying nanoscience at the university in Basel. Today I looked at the topic of intertial and non-inertial reference frames and the existence of fictitious forces. I understand that you call forces real in physics if they appear in interplay. Meaning that a force is real when there is the "actio" partner to the "reactio" partner. If this condition is not satisfied the force is not real. I also understand that if you specifically look at non-inertial reference frames you can...
View full post »

Thread 'Derivation of Hamilton's Principle: Questions'

I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
View full post »

Similar threads

I Calculating phase shift between two sinusoidal waves
Replies
8
Views
2K
I Velocity transformation between frames rotating relative to one another
Replies
1
Views
2K
On Bodies Moving with a Constant Velocity
Replies
11
Views
1K
I Wave number, frequency, and velocity in dispersive waves
Replies
2
Views
1K
I Work-Energy Theorem for Moving Block and Spring System?
Replies
4
Views
3K
I Does a rotating accelerometer moving linearly measure linear velocity?
Replies
47
Views
4K
B Kinematic equations ##\textbf{purely}## from graphs
Replies
49
Views
3K
Effects of centripetal force on longer objects
Replies
3
Views
1K
I Angular velocity of a rod and what formula to use while solving.
Replies
15
Views
2K
I Trajectory collision calculation
Replies
6
Views
2K

Hot Threads

Recent Insights

Back
Top