Question

felipe is a soccer coach. he carries his teams soccer balls in a wagon. which statement describes how newtons first law of motion is involved in this interaction? twice as much force is required to accelerate two identical wagons at a given rate compared to one. when felipe starts pulling the wagon forward, the soccer balls roll toward the back of the wagon. the wagon pulls felipes hand backward with the same force as felipe uses to pull the wagon forward.

Explanation:

Newton's first law (law of inertia) states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. When Felipe starts pulling the wagon forward, the soccer balls, which were initially at rest relative to the ground, tend to stay at rest due to inertia. So they roll toward the back of the wagon as the wagon moves forward. The first statement is related to Newton's second law ($F = ma$) and the third statement is related to Newton's third law (action - reaction).

Answer:

When Felipe starts pulling the wagon forward, the soccer balls roll toward the back of the wagon.