When an object moves into the path of another object, it is called

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

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.