Answer to Question #6602 in Mechanics | Relativity for Anonymous

Question

If Frankie the kangaroo climbed out of the crate and pushed the crate with a mighty 12 newtons of force against the efforts of Fred and the man (each applying 10 newtons of force), what would be the net force on the crate from all the pushing?

Answer 1

The forces has different& directions so some has “+” sign an some “-”
F=12+(-10+(-10))=-8 N