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What is the First Law of Motion also known as?
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The First Law of Motion is also known as the Law of Inertia.
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Who formulated the First Law of Motion?
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Sir Isaac Newton formulated the First Law of Motion.
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What does the Law of Inertia state about an object at rest?
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The Law of Inertia states that an object at rest will stay at rest unless acted upon by an external force.
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What does the Law of Inertia state about an object in motion?
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The Law of Inertia states that an object in motion will continue moving at the same speed and in the same direction unless acted upon by an external force.
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How does mass affect an object’s inertia?
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An object with greater mass has more inertia, meaning it requires more force to change its state of motion.
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Give an example that demonstrates the Law of Inertia.
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A car suddenly stopping and the passengers lurching forward demonstrates the Law of Inertia; their bodies want to keep moving at the same speed due to inertia.
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Why are seatbelts important in cars according to the Law of Inertia?
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Seatbelts are important because they provide the external force needed to change the motion of passengers, keeping them from continuing in motion during sudden stops.
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What happens to an object moving through space if no external forces act on it?
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It will continue moving at the same speed and in the same direction indefinitely due to inertia.
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How does friction relate to the Law of Inertia?
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Friction is an external force that opposes motion and can change the state of motion of an object, demonstrating the need for a force to alter motion.
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Why does a soccer ball eventually stop rolling on the ground?
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The ball stops due to external forces like friction and air resistance acting on it.
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What role does inertia play in a car taking a sharp turn?
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Inertia causes passengers to feel a force pushing them outward as their bodies want to continue in a straight line.
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Can inertia be directly measured?
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No, inertia itself cannot be measured directly, but it is inferred from mass and the object's resistance to changes in motion.
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Why is it harder to push a loaded cart compared to an empty one?
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A loaded cart has more mass, which means it has more inertia, requiring more force to change its motion.
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What would happen to a hockey puck on a perfectly frictionless ice surface?
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The puck would glide indefinitely without stopping or changing direction unless acted upon by an external force.
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How does the concept of inertia apply to crash testing in cars?
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Crash tests simulate collisions to test how well a car can minimize the effects of inertia, protecting passengers from abrupt motion changes.
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