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📚 Glossary Term

Newton's First Law

📖
Definition An object stays at rest or keeps moving in a straight line unless an unbalanced force acts on it.

🧒 In Simple Words

Newton's First Law says motion only changes when an unbalanced force pushes or pulls on an object.

📌 Example

A soccer ball stays still until a kick provides an unbalanced force.

âœī¸ Use It in a Sentence

"We used Newton's First Law to explain why the backpack stayed in place until it was lifted."

🔗 Related Terms

InertiaForceBalanced ForceUnbalanced Force