Asked by sara
What is inertia?the amount of force necessary to make an object at rest start movingan object’s velocity combined with its frictionwhat keeps an object steady, whether at rest or moving at the same velocitythe amount of friction necessary to slow down an object in motion
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GPT-5 mini
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Correct answer: "what keeps an object steady, whether at rest or moving at the same velocity."
More precisely: inertia is an object's tendency to resist changes in its state of motion — to stay at rest or keep moving at constant velocity unless a net external force acts on it.
Why the others are wrong:
- It's not the amount of force needed (that depends on mass and desired acceleration).
- It's not velocity combined with friction.
- It's not specifically the amount of friction to slow something down (friction is one force that can change motion).
More precisely: inertia is an object's tendency to resist changes in its state of motion — to stay at rest or keep moving at constant velocity unless a net external force acts on it.
Why the others are wrong:
- It's not the amount of force needed (that depends on mass and desired acceleration).
- It's not velocity combined with friction.
- It's not specifically the amount of friction to slow something down (friction is one force that can change motion).
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