Answer :
She walks/travels 40 meters. Her displacement is 20 metres because she walked 10m, back those same 10m and the 20m to the art classroom.
The total distance traveled by the girl will be 40 meters and the displacement will be 30 meters.
What will be the distance and displacement of the girl?
Distance = total amount of path followed by any body called distance.
Displacement= The minimum distance between two points irrespective to the path followed by the body is displacement.
It is given that
Distance traveled to north direction = 10 metres
Distance traveled to south direction= 30 metres
So the path followed by the girl in total = North direction + south direction
= 10+30
= 40 meters
And the displacement = min distance between History class and fountain
= 30 meters
total distance traveled by the girl will be 40 meters and the displacement will be 30 meters.
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