Question

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13) A student walks 20 m north, 10 m south, and 3 m north. To have a displacement of 0 m,
the student should walk _____m toward the _____.

Answer 1

13 m towards the south

Step-by-step explanation:

First, the student walks 20m North.

Then the student walks 10m South. This means that the student is now (20 - 10 m) north = 10m North

Now the student walks 3m North

Therefore the student is now ( 10 + 3m) north

= 13m North.

To return to starting position, the person should walk 13m south.

Answer 2

13) A student walks 20 m north, 10 m south, and 3 m north. To have a displacement of 0 m, the student should walk 13m toward the south.