Question
If a flashing light source moves toward you fast enough so that the time interval between flashes is half as long, how long will the time interval between flashes be if the source is moving away from you at the same speed?
Step 1
Given that this time interval is half the original time interval, we can solve for \(v\): \[0.5 = \sqrt{\frac{c - v}{c + v}}\] Squaring both sides and solving for \(v\) gives \(v = \frac{3c}{5}\). Show more…
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