Have you ever heard of the law of inertia? In this Newton's First Law of Motion video for kids, you will learn about why objects either move or don't move. The first law of motion, or the law of inertia, states that objects at rest will remain at rest unless something else moves that object. It also states that an object that is moving will keep moving until something stops it.
When it comes to an object at rest, think of anything around you that isn't moving. A pillow, a book on the desk, or the desk itself. They will stay unmoved unless you, or something else, moves it. As far as objects that are moving, think of a ball in the air. Eventually the ball will fall because of gravity and air resistance. However, if it were in space, it would keep moving forever at the same speed unless it hits something or something hits it.
Speaking of gravity and air resistance, these are two natural forces that affect an object's motion. Another is friction. If you roll something across a flat but uneven surface, that object will eventually stop because of friction. Say, however, you roll something along a flat and even surface, such as perfectly smooth ice. In this case, the object you roll may not stop for a much longer amount of time because there is much less friction to stop its motion.
We hope you and your student(s) enjoyed learning about Newton's first law of motion! If you want to learn even more, head over to our website and download one of our many free lesson plans about the law of inertia, full of activities, worksheets, and more!
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What you will learn in Newton's First Law of Motion for Kids:
0:00 Introduction to the first law of motion (the law of inertia)
0:41 Explanation for an object at rest
1:20 Explanation for an object in motion
2:43 The effect of friction on objects
3:33 The effect of gravity on objects
4:11 The effect of air resistance on objects
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