Finally, the third force impelled the planets outward due to the sun's revolution.

The answer is, of course, that the centrifugal force of the earth's spin impels it to flow that way.

Some inner force impelled her into his arms.

Some force not himself impels him, and go he must.

Her personality aroused Glinnes to wonder what force or ambition could impel such a girl to risk public exposure?

She might have continued: the force of what she felt might have impelled her to say more.

What forces impelled it?

Then the same force that impelled you to take her from home impelled him to kill her.

Whatever our origins or the forces that had impelled us, we had climbed to a height never reached by any other people.

It is as if some natural force impelled Mozart to keep everything in balance.