What would happen if you drove your car close to the speed of light and turned on the headlights?
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Light in vacuum always travels at the same speed c, exactly 299,792,458 meters per second, no matter how it is created or in what frame it is observed. If you drove a car close to the speed of light relative to the ground (neglect air effects) and turn on the headlights, light would leave your headlights at speed c the way it always does.
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What would happen if you drove your car close to the speed of light and turned on the headlights?
If you drove a car close to the speed of light relative to the ground (neglect air effects) and turn on the headlights, light would leave your headlights at speed c the way it always does. To you in the speeding car, the light would be traveling away at speed c. ... The moving car actually gets squashed front to back.
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