Question

Define 1 second,1kg,1 standard mater

Answer 1

Answer:

1 sec : The second (abbreviation, s or sec) is the Standard International ( SI ) unit of time.

Kilogram is a unit of measurement used to measure much heavier objects. For example, a one-liter bottle of soda weighs about 1 kilogram

The Standard meter is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.