Uniform Circular Motion

  • #1
StephenDoty
265
0
I had a test today, there was a question about uniform circular motion. Isn't the velocity constant since the speed is constant? I know angular velocity is constant, but the question's answers only state constant speed or velocity.

Thank you.

Stephen
 

Answers and Replies

  • #2
Phlogistonian
87
0
Velocity is a vector. Speed is a scalar (the magnitude of the velocity). If the direction of motion changes, the velocity changes, even if the speed is constant.
 
  • #3
robertm
290
0
Yes the velocity is constant since the speed is constant, but only for tangential speed, you are forgetting the centripetal component of circular motion. As phlogistonian stated velocity is a vector i.e... speed and direction, a change in both or either will cause an acceleration.
 

Suggested for: Uniform Circular Motion

Replies
11
Views
440
  • Last Post
Replies
18
Views
417
Replies
1
Views
346
  • Last Post
Replies
6
Views
277
Replies
1
Views
428
Replies
2
Views
497
  • Last Post
Replies
4
Views
385
Replies
2
Views
152
Replies
11
Views
560
Replies
6
Views
362
Top