If you walk along a log floating on a lake why does the log move in the opposite direction?

HERE'S YOUR ANSWER:

•Since the log is stationary and you are moving beside the log, it seems to move in the opposite direction from your point of view, because from your perspective u are stationary and the log is moving. If you were to stop moving the log would also stop moving.

HOPE IT HELPS...

the body's situation won't change the forces are equal opposit and on the same body