- #1
Pochen Liu
- 52
- 2
- Homework Statement
- Stellar system Q1 moves away from us at a speed of 0.860c. Stellar system Q2, which lies in the same direction in space but is closer to us, is moving away from us at a speed 0.560c. What multiple of c gives the speed of Q2 as measured by an observer in the reference frame of Q1?
- Relevant Equations
- *attached
I've tried using this equation:
Where:
u' = 0.86c
v = 0.3c
u = Is the speed of Q2 as measured by an observer in the reference frame of Q1 = 0.922c
Where have I gone wrong? Have I missed a negative symbol?
Where:
u' = 0.86c
v = 0.3c
u = Is the speed of Q2 as measured by an observer in the reference frame of Q1 = 0.922c
Where have I gone wrong? Have I missed a negative symbol?