Khan Academy Blog
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Have you ever tried to slide a heavy box across the floor and found it difficult to move? Or maybe you've noticed that your bike tires wear out over time? These are examples of the force of friction …
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Have you ever played with a rubber ball and wondered why it bounces back when you throw it against a wall? Or have you ever tried pushing a heavy object and noticed that it pushes back with an equal …
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Do you ever wonder why objects move the way they do? Or why it takes more force to push a heavier object than a lighter one? These are questions that scientists have been asking for centuries. One of …
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Have you ever heard the word "acceleration"? Maybe you've seen it in a science book or heard it in a movie about race cars. But what exactly is acceleration, and how does it work? Acceleration is a …
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Velocity is an important concept in physics, and it helps us understand how fast an object is moving and in which direction. If you're interested in learning how to calculate velocity, you've come to …
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Are you struggling with math problems that require calculating an average? Don't worry! You're not alone. Calculating the average is a fundamental math concept that is used in many areas of life, such …
Continue Reading about How to Calculate Average? A Simple Guide for Kids →