Newton's 1st Law

What does Newton's First Law of Motion state about an object's state of motion?

• An object at rest will eventually move, and an object in motion will eventually stop.

• An object at rest will remain at rest, and an object in motion will remain in motion, unless acted upon by an external net force.

• An object's motion is always proportional to the force applied to it.

• An object will always accelerate in the direction of the applied force.

Why do objects in motion on Earth eventually stop, seemingly contradicting Newton's First Law?

• Objects naturally tend to return to a state of rest.

• The Earth's gravitational pull always brings objects to a halt.

• External forces like wind resistance and friction impede motion.

• Objects lose their internal energy over time, causing them to slow down.

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How does motion in space differ from motion on Earth, according to the video?

• Motion in space is considered a special case, while motion on Earth is normal.

• Objects in space require constant engine power to maintain velocity.

• Space lacks significant external forces like friction and wind resistance, allowing objects to maintain constant velocity indefinitely.

• Gravity is the only force acting on objects in space, causing them to stop.

What is the relationship between an object's mass and its inertia?

• Mass is unrelated to inertia; inertia is solely determined by an object's velocity.

• Objects with less mass have greater inertia.

• Inertia is the capacity to resist changes in motion, and it is proportional to an object's mass.

• Mass is a measure of an object's weight, not its inertia.

Due to inertia, what will happen to your body in a car accident?

What do you call the sum of all forces?