A Spaceship Is Moving in a Straight Line Away from Earth

question 32

Multiple Choice

A spaceship is moving in a straight line away from Earth at 0.80c,measured relative to Earth.It launches a missile that moves away from the spaceship in the forward direction at 0.60c,relative to the ship.Relative to Earth,what is the speed of this missile?

• A)greater than 0.80c but less than c
• B)1.4 c
• C)c
• D)greater than c but less than 1.4c

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