posted by bobbi on .
in physics terms what does vacuum mean?? i thought they meant a vacuum sweeper?? huh? The question is " The same object is dropped in a vacuum and then in air. Whaich of the parameters( distance,velocity,acceleration) vary and which remain constant during succeding seconds of time
A. in a vacuum
B. in air when terminal velocity from air resistance has been reached?
a vacuum has no air in jt