Explain how mass relates to inertia.

Mass is a measure of inertia. The more mass an object has, the more inertia it possesses, making it harder to change its state of motion.

What does F(net) represent in Newton's second law?

F(net) represents the net force acting on an object, which is the vector sum of all forces acting on the object.

The net force acting on the object is zero, resulting in no acceleration.

Force of gravity = 19.62 N (downward), Normal force = 19.62 N (upward)

Grade 9th Grade · Physics · 80 min· Hs-ps2-1

I can apply Newton's laws of motion to explain how forces affect the movement of objects.

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Newton's Laws of Motion | Learn about Sir Isaac Newton for Kids

3 key concepts

1
Newton's first law describes inertia, which is an object's tendency to resist changes in its state of motion or rest.
2
Newton's second law states that net force is equal to mass times acceleration, or F = ma.
3
Newton's third law states that for every action, there is an equal and opposite reaction.

12 questions · Multiple choice & Short answer & True/false

Quick comprehension check

“A 2 kg box is sitting on the floor. What is the net force acting on the box? What is the normal force acting on the box?”

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