Question

Define one meter and one second

Answer 1

Answer:

The metre, symbol m, is the SI unit of length. It is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299 792 458 when expressed in the unit m s–1, where the second is defined in terms of the caesium frequency Cs. This definition implies the exact relation c = 299 792 458 m s–1.

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Answer 2

Answer:

meter is vehicle speed meter that detects speed of a vehicle per/hour