Necesito ejemplos de factores que afectan la velocidad de reacción

coil wire, increase current, put iron inside the coil

an obstruction

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

answer; how far out of place which the object finished relative to the starting location;