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9 Cards in this Set
- Front
- Back
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Eratosthenes
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The diameter of Earth
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Aristarchus
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Distance and Size of the Moon
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What is Newton's first law?
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Every object continues in a state of rest or of uniform speed in a straight line unless acted on by a nonzero net force.
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What is a vector quantity?
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A quantity that requires magnitude and direction when described.
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What is Net Force?
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Net force is the combination of all forces that change an object’s state of motion.3
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What is the Equilibrium Rule?
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The vector sum of forces acting on a non-accelerating object equals zero.
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What is Support Force?
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Support force (normal force) is an upward force on an object that is opposite to the force of gravity.
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What is Equilibrium?
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Equilibrium: a state of no change with no net force acting
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Motion is ...
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Relative
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