A 2,000 kg freight train is traveling on the railroad tracks from Birmingham to Mobile. It traveling at a speed of 25 m/sec. What is the kinetic energy of this train?

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.

statement #3 on andre"s list is false.

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.