Exploring Newton's First Law of Motion

The video introduces Newton's First Law of Motion, also known as the Law of Inertia, explaining its historical context and significance in physics. It describes how objects at rest stay at rest and objects in motion stay in motion unless acted upon by an external force. The concept of inertia is illustrated with examples, such as an apple falling and being thrown. The video emphasizes the role of external forces in changing an object's state of motion, providing a comprehensive understanding of Newton's First Law.

In this Law, "At rest" means ___.

• Asleep

• Still

• In Motion

• On Break

Only ___ forces can change motion.

• Balanced

• Unbalanced

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The tendency for an object to "keep doing what it is doing" is called ___.

• Friction
• Inertia
• Acceleration
• Gravity

Why does an object at rest stay at rest?

• Because it is so tired

• Because it is heavy

• Because of its inertia

• Because of gravity

What happens when an external, unbalanced force acts on an object at rest?

• The object remains at rest

• The object disappears

• The object begins to move

• The object changes color

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What does an external, unbalanced force do to an object?

• Changes its color

• Makes it lighter

• Changes its state of motion

• Makes it invisible

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What example is used to illustrate Newton's first law?

• A leaf falling from a tree

• A ball rolling downhill

• An apple being thrown

• A car stopping suddenly

We've been using a different word than "air resistance."

When we talk about the force in the air that acts opposite to motion, we call it ___.

• Normal

• Drag

• Friction

• Applied

What causes an object in motion to change its state of motion?

• Inertia

• An external, unbalanced force

• The object's color

• An internal force

Tags

NGSS.MS-PS2-2

What summarizes Newton's first law of motion?

• Apples are delicious, and you should eat one every day.

• An object at rest stays at rest and an object in motion stays in motion unless acted upon by an external force

• The force of an object is equal to its mass times acceleration

• For every action, there is an equal and opposite reaction