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Cards In This Set
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Newton's third law of motion
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A law that states that if one object exerts a force on another object, then the 2nd object exerts a force of equal strength in the opposite direction on the 1rst object
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For every action there is a what?
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A reaction
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Can you detect motion when paired forces are in action?
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Not always
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Why don't action- reaction forces cancel?
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Because they're acting on different objects
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Momentum
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A characteristic of a moving object that's related to the mass & velocity of the object or the quantity of motion
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What's the equation for momentum?
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Mass* velocity (* means times)
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What's momentum measured by?
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Kg*m/s
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What's momentum described by?
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Its direction and quantity
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What's momentum similar to in description?
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Acceleration, velocity & force
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If an object has more momentum, is it harder or easier to stop the object?
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Harder
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The more mass in an object, the more or less momentum?
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More
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The higher velocity an object has, the more or less momentum?
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More
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Conservation (in physics)
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Refers to the conditions before & after some event
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The law of conservation of momentum
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A law that states that in the abscence of outside forces, the total momentum of objects that interact doesn't change
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Does a group of objects' total momentum change or stay the same?
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Stay the same unless acted upon by outside forces
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