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15 godz. temu · SPEED DISTANCE AND TIME TYPES 1 VERY EASY CONCEPT #RPF #SI #UPP #SSCGD #SSCCGL #SSCMTS #MATHSTRICK
15 godz. temu · The metre is the length of the path travelled by light in vacuum during a time interval of 1 / 299 792 458 of a second. This definition fixed the speed of light in vacuum at exactly 299 792 458 metres per second [121] (≈ 300 000 km/s or ≈1.079 billion km/hour [123] ).
