- #1

- 118

- 0

But If instead of light,he throw a ball then both will see the same speed for the ball always?

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter Hepic
- Start date

- #1

- 118

- 0

But If instead of light,he throw a ball then both will see the same speed for the ball always?

- #2

PAllen

Science Advisor

- 8,851

- 2,051

Suppose B is moving at v relative to A. Suppose A throws 'something' at velocity u as measured by A. Then B sees the 'something' moving at:

(u-v)/ (1 - uv/c^2)

If you put u=c, you get c also for what B sees. For any other value of u, you get a different speed as observed by B. for u much less than c, this formula becomes empirically indistinguishable from u-v. But it is one formula for all cases.

Share:

- Replies
- 65

- Views
- 9K

- Replies
- 2

- Views
- 2K