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1. Feb 18, 2016

### cosmos42

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution
(a) The person outside of the car will see the car's velocity as being c/√2 and the baseball's velocity as c/√2, therefore the observer in frame S will see those two velocities as added together because they both move in the positive x-direction.
(b) Car's velocity - ball's velocity = 0 *edit* now I think this answer might be -c/√2
(c) I have no idea

Last edited: Feb 18, 2016
2. Feb 19, 2016

### BvU

(a) so what did you do to get the answer, and what did you get ?
(b) so what did you do to get the answer 0 and why do you now think it's wrong ?
(c) which equations apply ?

3. Feb 19, 2016

### cosmos42

SEE ABOVE

4. Feb 19, 2016

### cosmos42

Forget it this is due in an hour
This website is zero help 100% of the time

5. Feb 19, 2016

### Staff: Mentor

We have thousands of members who would disagree with your assessment.

If you've come here thinking that if you post a problem we tell you the answer, you are mistaken. We are happy to help you with your problems, and steer you in the right direction, but we won't spoonfeed the answers to you.