"Raqueeb Hassan" <raqueebh@yahoo.com> wrote in message
news:2545b34c.0309240211.3d8aa03b@posting.google.com...

Hello there!

I was reading about seti and it's problem regarding doppler shift.
Now, ... sorry to be awkward, I din't get why the unit measured as
something cm or ft/sec� ... why this second as (square), please?

Thanks very much.

raqueeb hassan
bunia, DRC

no doubt someone else will give a more eloquent answer but here goes

if your travelling at a constant velocity of 10 meters per second (10m/s)
and  you undergo an acceleration of 2m/s, then every second, your velocity
will increase by 2m/s.
so your acceleration is 2 meters per second per second or in other words
2m/s�

clear as mud