i.p.c

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?

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  1. 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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