A remote controlled car travels 15 m north, back tracks 5 meters and stops. What is the car's displacement?

The displacement is the change in position, or a displacement is a vector whose length is the shortest distance from the initial to the final position.

Therefore,

Displacement = final position - initial position.

Given, final position = 15 m and initial position = 5 m

So,

Displacement = 15 m - 5 m = 10 m

Thus, the car's displacement is 10 m