Beach Day by Rodger Bliss
January 2023
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Light Speed Mr. Sulu

The speed of light is approximately 671 million miles per hour. How much faster will the light travel if a car is driving 100 mpg and turns on it’s lights vs. a parked car turning on his lights?

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3 guesses to Light Speed Mr. Sulu


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  • Paul

    Since light traveling at 671,000,000 mph would still travel faster than a car traveling at 100 mph, parked or driving the speed light will travel remains 671,000,000 mph.

  • I can’t see how the car’s fuel efficiency would be relevant in calculating the combinant speed.

  • Dude

    Paul, you are today’s winner.

    It is the same, it cannot travel any faster since it is the fastest known speed.

    (Good catch Jimmy Barcus, it should have read mph, not mpg.)