Question

the girl on the swing is ______ with respect to the seat of the swing​

Answer 1

Answer:

moving

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Answer 2

Answer:

The missing word is at rest.

Explanation:

Here the frame of relative motion comes in picture. The girl is moving with respect to us who are standing outside the frame of movement. But, the seat is also moving with the girl, to which the girl is at rest.

This is same with us with respect to earth. Earth is moving at a very high speed revolving the sun. But to us, it seems at rest. Because, we are also moving with earth at the same speed.