1. The inertia of an object is quantitatively measured by its mass, represented in kilograms (kg). Mass determines the resistance of an object to changes in its state of motion, according to Newton's second law: F = ma.

    The inertia of an object is quantitatively measured by its mass, represented in kilograms (kg). Mass determines the resistance of an object to changes in its state of motion, according to Newton’s second law: F = ma.

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  2. The force required to move a small cart is much less than the force needed to move a train. This is because a train has significantly more mass, and according to Newton's second law (F = ma), more force is required to achieve the same acceleration.

    The force required to move a small cart is much less than the force needed to move a train. This is because a train has significantly more mass, and according to Newton’s second law (F = ma), more force is required to achieve the same acceleration.

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  3. When a bus starts suddenly, our lower body moves first because it's in contact with the bus floor, while the upper body lags due to inertia, which resists changes in motion.

    When a bus starts suddenly, our lower body moves first because it’s in contact with the bus floor, while the upper body lags due to inertia, which resists changes in motion.

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  4. When standing in a bus that begins to move suddenly, our lower body moves with the bus, while our upper body, due to inertia, remains momentarily stationary, causing us to feel like we're falling backward.

    When standing in a bus that begins to move suddenly, our lower body moves with the bus, while our upper body, due to inertia, remains momentarily stationary, causing us to feel like we’re falling backward.

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  5. A one-rupee coin requires less force to move compared to a five-rupee coin because it has less mass. According to Newton's second law (F = ma), less mass means less force is needed to achieve the same acceleration.

    A one-rupee coin requires less force to move compared to a five-rupee coin because it has less mass. According to Newton’s second law (F = ma), less mass means less force is needed to achieve the same acceleration.

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