Final answer:
Logan's displacement after driving 8 km and then 5 km depends on the direction. If the directions are the same, displacement is 13 km; if opposite, it's 3 km. Displacement includes magnitude and direction while distance includes only magnitude.
Step-by-step explanation:
The displacement of Logan after driving his monster truck 8 km and then 5 km depends on the direction of the two parts of the trip. If both parts are in the same direction, the displacement will be the sum of the two, so 8 km + 5 km which equals 13 km.
However, if the two parts are in opposite directions, then the displacement is the difference between the two distances, for example, if after lunch Logan drives back in the direction he came from, the displacement would be 8 km - 5 km, which equals 3 km. Displacement considers both magnitude and direction, while distance only considers magnitude. In physics, displacement is a vector quantity that refers to an object's overall change in position.