It swung like a planet, without any apparent speed but with a drifting unstoppability.

What do we mean by an apparent speed?

Remember that these forces calculated are normal and tangential to the apparent speed.

So the apparent angular speed of the Moon (and its distance) would vary.

The ultimate effect would be to increase the apparent speed of that photon.

For a time, she felt the sensation of incredible velocity without apparent speed, and then all motion ceased.

And many other ordinary horses have been dazzling the public at Gulfstream this season by their apparent speed.

That limit is what gives light an apparent top speed.

The roughness of the tracks only seemed to increase the apparent speed.

It sped across the sky at the apparent speed of an atmosphere-flier.