Starting from the orgin, a person walks 4 km East during the first day and 7 km west the next day. What is the net displacement of the person from the initial point in two days

3km due West

Explanation:

Displacement is the distance traveled in a specific direction. From this definition, we can see that displacement is a vector quantity that has magnitude and direction.

So;

 For the first day, the person walks 4km East:

                                                           4km

                                     Start → first day

                                                            7km

              ←  Second day

The displacement of the boy  = 7km  - 4km  = 3km due West

answerscientific theory;

the moving of the box is a result of centripetal force. think of that  as a car or a truck in this case creates a turn, the force of friction performing upon the turned wheels of the car runs centripetal force obligatory for circular motion for the things inside it.