Question

match each of newtons laws of motion to the statement it best describes. newtons first law of motion newtons second law of motion newtons third law of motion the ground exerts a force on sophies foot that is the same magnitude, but opposite direction, as sophies foot exerts on the ground. the skateboard remains stationary until sophie pushes on the ground. the harder sophie pushes against the ground, the more the skateboard will accelerate.

Explanation:

Newton's first law is about inertia - 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. The statement "The skateboard remains stationary until Sophie pushes on the ground" describes this law as the skateboard's state of rest is maintained until an external force (Sophie's push) is applied. Newton's second law is about the relationship between force, mass and acceleration ($F = ma$). The statement "The harder Sophie pushes against the ground, the more the skateboard will accelerate" describes this law as greater force leads to greater acceleration. Newton's third law states that for every action, there is an equal and opposite reaction. The statement "The ground exerts a force on Sophie's foot that is the same magnitude, but opposite direction, as Sophie's foot exerts on the ground" describes this law.

Answer:

• Newton's first law of motion: The skateboard remains stationary until Sophie pushes on the ground.
• Newton's second law of motion: The harder Sophie pushes against the ground, the more the skateboard will accelerate.
• Newton's third law of motion: The ground exerts a force on Sophie's foot that is the same magnitude, but opposite direction, as Sophie's foot exerts on the ground.