brazil-enem 2016 Q152

brazil-enem · Other · enem__day2 Vectors Introduction & 2D Vector Word Problem / Physical Application
A group of junior scouts, in an activity at the city park where they live, set up a tent as shown in the photo in Figure 1. Figure 2 shows the diagram of this tent's structure, in the form of a right prism, in which metal rods were used.
After assembling the rods, one of the scouts observed an insect moving on them, starting from vertex $A$ toward vertex $B$, from there toward vertex $E$ and, finally, made the journey from vertex $E$ to $C$. Consider that all these movements were made by the shortest distance path between the points.
The projection of the insect's displacement on the plane containing the base $ABCD$ is given by (see answer options with figures).
A group of junior scouts, in an activity at the city park where they live, set up a tent as shown in the photo in Figure 1. Figure 2 shows the diagram of this tent's structure, in the form of a right prism, in which metal rods were used.

After assembling the rods, one of the scouts observed an insect moving on them, starting from vertex $A$ toward vertex $B$, from there toward vertex $E$ and, finally, made the journey from vertex $E$ to $C$. Consider that all these movements were made by the shortest distance path between the points.

The projection of the insect's displacement on the plane containing the base $ABCD$ is given by (see answer options with figures).