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Sir Isaac Newton was an English scientist who questioned why apples fall out of trees. He often thought about this and why objects go toward one another.

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Sir Newton realized there was an invisible force pulling objects to the ground. He realized that this force plays an important role in motion.

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Force and Motion: 6 StudyJams! Interactive Science Activities | Scholastic

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Students will explore simple machines, gravity and inertia, acceleration, and more with these StudyJams! activities.

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In 1687, Newton wrote a book about three laws of motion. These laws are followed by everything in the universe.

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The law of inertia says that if an object is in motion, it will stay in motion at the same speed and direction. If a force acts on a still object, it will move. If a force acts on a moving object, it will change its direction or speed.

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Second Law of Motion: The Power of Force

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Second Law of Motion: The Power of Force

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The second law says that a force can slow down, speed up, or change the direction something is moving in. A larger force creates a larger change in motion.

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The third law of motion states that for every action, there is an equal and opposite reaction.
Forces work in pairs; life and gravity are opposing forces.