Observer a Measures the Velocity of a Rocket as and a Comet

question 57

Multiple Choice

Observer A measures the velocity of a rocket as and a comet as .Here and are parallel and in the direction of the observer's positive x axis.The speed of the comet as measured by an observer on the rocket is:

• A)(u - v)/(1 - uv/c²)
• B)(u - v)/(1 - v²/c²)
• C)(u - v)/(1 - v²/c²)^1/2
• D)(u - v)/(1 + uv/c²)
• E)(u + v)/(1 - uv/c²)