In the Tough Man Competition, very strong men are challenged to push or pull extremely large and heavy objects to test their strength. In one such challenge, they were asked to push one of two rail cars, an engine car and a box car. The data tables show one man's results.

Did it move the engine car?:
1000 newtons: no
2000newtons: no
3000 newtons: yes

Did it move the boxcar?:
1000 newtons: no
2000 newtons: no
3000 newtons: no

A: Why couldn’t the strong man move the box with a force of 3000 Newtons?

B: What could be done to move the boxcar

C: Another Student claims that during the competition, the sum of the forced on the boxcar was 0 N. What evidence is the student using to make this claim? Be sure to explain