Tom Bruhns pointed out in an email that the statement quoted below isn't
a very good example. Because the mass of the Sun is so much greater than
that of the Earth, the Earth's orbital velocity isn't significantly
affected by the mass of the Earth.

So I'll restate that as follows:

The distance between the Earth and the Sun and the orbital velocity of
the Earth are related, but distance and velocity aren't the same thing.

Or,

The mass of the Sun and the orbital velocity of the Earth are related,
but the two aren't the same thing.

You get the drift.

Thanks, Tom, for pointing this out.

Roy Lewallen, W7EL

Roy Lewallen wrote:
. . .
The mass of the Earth is related to its orbital
velocity, and mass certainly isn't velocity. . .