You are not logged in.

- Topics: Active | Unanswered

- Index
- » Science HQ
- »
**velocity**

Pages: **1**

**niharika_kumar****Member**- From: Numeraland
- Registered: 2013-02-12
- Posts: 1,031

a particle is moving on a circular path with constant speed v.Find the change in velocity when it moves through 120°?

friendship is tan 90°.

Offline

Change in velocity? Do you mean instantenous acceleration or average?

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'You have made another human being happy. There is no greater accomplishment.' -bobbym

Offline

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,664

hi Niharika

Diagram below. What is not clear to me is how you are supposed to express this. (in terms of what coordinate system).

If I had this problem and no more information I would call the original vector V1 = v.i where i is a unit vector in that direction. Then find V2 in terms of i and j.

Bob

ps. Looking again at the diagram, it would probably have been better if I had put V1 going the other way so it is positive i, but too late. I'm sure you can re-jig it yourself.

*Last edited by bob bundy (2014-05-11 19:46:42)*

Offline

**niharika_kumar****Member**- From: Numeraland
- Registered: 2013-02-12
- Posts: 1,031

yes, I got it.

thanks

friendship is tan 90°.

Offline

Pages: **1**

- Index
- » Science HQ
- »
**velocity**