The speed of the laser beam relative to the fixed observer. Also, the speed of the missile relative to the fixed observer.
Answer to Problem 91A
The speed of the laser beam relative to the fixed observer is
The speed of the missile relative to the fixed observer is
Explanation of Solution
Given:
The velocity of the rocket is
The rocket releases a missile, such that the relative speed of the missile with respect to the rocket is denoted as
Formula used:
The expression for the speed of the missile relative to the observer is
Calculation:
Consider the velocity of the laser beam (equivalent to the speed of light) is
The speed of the laser beam relative to the unmoving observer is
Consider the rocket moves with the speed,
Consider the speed of the missile relative to the rocket is
The speed of the missile relative to the unmoving observer as follows:
Conclusion:
Therefore, the speed of the laser beam relative to the unmoving observer is
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