Final answer:
In Physics, when a person walks 15 meters to the right and then 10 meters to the left, the total distance travelled is 25 meters while the displacement is 5 meters to the right.
Step-by-step explanation:
The question asked involves concepts from Physics regarding displacement and distance, which are vector and scalar quantities respectively. When the person walks 15 meters to the right, and then turns around and walks 10 meters back to the left, the total distance travelled is the sum of the absolute values of each segment of the walk, which is 15 m + 10 m = 25 m. In physics, distance is a scalar quantity, which means it only has magnitude and no direction associated with it.
Displacement, on the other hand, is a vector quantity, which has both magnitude and direction. To find the displacement, we subtract the distance walked to the left from the distance walked to the right because they are in opposite directions. Hence, the displacement is 15 m - 10 m = 5 m to the right (assuming the right direction is positive). This represents the overall change in position of the person.