Newton's Laws
If 20N of force are pushing to the left and 20N of force are pushing to the right, which way will the box move?
Neither way. It is a balanced or net zero force.
A person flying through the windshield in a car crash because they did not buckle up, is an example of which law of motion?
Newton's 1st Law
If Ms. Ruiz was pushing a box to the left and Ms. Fergie was pushing a box to the right, which way would the box go?
To the right, because Ms. Fergie is pushing with more strength and force than Ms. Ruiz. Ms. Fergie is stronger and younger. (Ms. Ruiz is still awesome though!)