“Prędkość to
nie to samo co szybkość”
„Velocity is not the same than speed”
„Speed (szybkość), in
physics jargon, keeps its ordinary meaning --- it is simply a measure of how fast
something's moving, and gives no clue about which direction it's moving in.
Velocity (prędkość), on the other hand, in physics
jargon includes direction. For motion along a straight line, velocity can be
positive or negative. For a given situation, such as Gdynia to Sopot, we have
to agree beforehand that one particular direction, such as away from Gdynia,
counts as positive, so motion towards Gdynia would then always be at a negative
velocity (but, of course, a positive speed, since speed is always positive, or
zero)."
I N F O R M A C J E dla
poszczególnych grup
„POMOST” dla
rozpoczynających studia
PODSTAWY
MATEMATYCZNE PDF HTML
S T A Ł E F I Z Y C Z N E
|
|
|
