# i.p.c

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An ostrich runs north in a straight line for 21 meters. She then turns around and runs 25 meters back toward her nest (south) on the same path. What is her displacement?

• math -

What is i.p.c. supposed to mean?

21 - 25 = -4.

I used positive numbers for north displacement , so the minus sign means it ends up 4 meters south

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