Question

which of the following is an example of newtons second law of motion? a a rocket launching into space b a soccer ball rolling down a hill c a person pushing a heavy box across the floor

Explanation:

Newton's second law of motion states that force ($F$) is equal to mass ($m$) times acceleration ($a$), or $F = ma$. A person pushing a heavy box across the floor involves applying a force to a mass (the box) to cause an acceleration. A rocket launching into space is more related to Newton's third - law (action - reaction). A soccer ball rolling down a hill is mainly due to the force of gravity and friction, not a direct illustration of applying a force to a mass to get an acceleration as in the case of pushing a box.

Answer:

C. A person pushing a heavy box across the floor