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What is another name for Newton's First Law of Motion?
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Newton's First Law is also known as the Law of Inertia.
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Define Newton’s First Law of Motion.
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It states that an object at rest stays at rest and an object in motion stays in motion at a constant speed in a straight line unless acted upon by an external force.
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What is inertia?
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Inertia is the property of an object to resist changes in its state of motion.
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How does inertia relate to mass?
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The greater the mass of an object, the greater its inertia, meaning more force is required to change its motion.
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Give an example of Newton's First Law in everyday life.
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A book resting on a table stays at rest until a force (like a push) is applied to it.
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Explain how seat belts in cars relate to the law of inertia.
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Seat belts help to provide the external force needed to stop passengers’ inertia from moving them forward in the event of a sudden stop.
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What happens to a moving object if no external force acts on it?
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It will continue to move in a straight line at a constant speed.
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How does friction relate to Newton's First Law?
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Friction is an external force that can stop or slow down moving objects.
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Why does a soccer ball eventually stop rolling on the grass?
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The friction between the soccer ball and the grass acts as an external force to slow it down.
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Can an object have inertia if it is in motion?
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Yes, an object in motion has inertia and will continue its motion unless acted upon by an external force.
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Why don't satellites fall back to Earth due to inertia?
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They are in a state of freefall with a forward velocity that keeps them in orbit around Earth.
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What would happen to a hockey puck sliding on ice if friction did not exist?
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It would continue sliding at a constant speed indefinitely without coming to a stop.
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How does mass affect the force needed to change an object's motion?
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More massive objects require a greater force to change their motion.
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What external forces typically act on objects on Earth?
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Gravity, friction, and applied forces like pushes or pulls.
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Is inertia only applicable to objects in motion?
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No, inertia applies to objects at rest as well, resisting changes to their state of motion.
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