Why is electric field a vector?

Because it has a strength AND a direction.

Two separate charges that both cast their fields over the same place
can cancel each other out at that place if they're located just right.
You can't do that with scalars.

Iread this book last year so take this with a grain of salt.gene jumps from the tree to compete with finny due to the fact that gene is always trying to do better than finny. he is put under the grasp of peer pressure due to finny almost forcing him to do this. ever since he first jumped finny kept pressuring him to jump since he thought gene enjoyed jumping.rather than uses this answer you should probably just reread chapters 3-4