🚀 go-pugleaf

John & Eileen Jones wrote:
> SERPENT! wrote:

> > Well what these people are thinking of is Velocity or speed.
> > Velocity is the speed and directon, ie:  6.4 m/sec toward center of earth.

Correct.

> > Speed is the relationship of time and distance, ie:  3 m/sec

Correct.

> > Acceleration is the gaining of speed.

No. Acceleration is a change in velocity. Either a change in speed or a
change in direction constitutes a change in velocity, and is thus
acceleration. Since the earth is spinning, we are always accelerating
when we are sitting in a chair. However, (correct me if I'm wrong) our
acceleration is not necessarily towards the center of the earth.

> > > maybe its just me, but i always thought that acceleration meant the
> > > change in one's speed and/or direction, therefore if i am sitting in
> > > this chair, the only acceleration i am doing is due to the earth
> > > spinning and orbiting the sun. since my speed toward the center of the
> > > earth is zero, and does not change unless i fall out of the chair
> > > (which has been known to happen), so whether i am at sea level or
> > > 10000 meters, as long as i am not going up or down, acceleration
> > > towards the center of the earth is always zero.

Whoever posted this is absolutely right. (Again, if centripetal
acceleration is towards the center of the earth, this is wrong. Can
someone please tell me what is technically centripetal acceration?)


Arty     =op