TIME REMAINING 59:30
Which best describes vibration?

the distance traveled per unit in time
the action of moving back and forth quickly and steadily
the distance between one compression and the compression next to it
the action of moving through a material or substance

the action of moving back and forth quickly and steadily

Explanation:

The action of moving back and forth quickly and steadily

Explanation:

i heard they are taking it off i hope this isn't true but otherwise if it doesn't get taken off it will probably be in early december or early january of 2018-2019

answer; pentagon papers, vietnam draft-resistor, james dean, american revolution;