Unit 3: Circular Motion and Gravitation
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AP Physics 1: Algebra-Based
Last updated 5:07 PM on 3/31/23
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20 Terms
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What is Uniform Circular Motion?
Uniform circular motion is the motion of an object moving in a circular path at a constant speed.
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How does velocity change in Uniform Circular Motion?
In Uniform Circular Motion, although the speed may be constant, the velocity is not because the direction is always changing.
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What causes acceleration in Uniform Circular Motion?
Since the velocity is changing in Uniform Circular Motion, there must be acceleration.
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What is Centripetal Force?
Centripetal force is the force that acts on an object moving in a circular path, directed towards the center of the circle.
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What is the purpose of Centripetal Force?
Centripetal force is responsible for keeping the object moving in a circular path.
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What is Centripetal Acceleration?
Centripetal acceleration is what turns the velocity vectors to keep the object traveling in a circle.
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What is the formula for Centripetal Acceleration?
a꜀ \= v^2/r
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What is the formula for Centripetal Force?
F \= mv^2 / r
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What are some examples of Uniform Circular Motion?
Examples include a car around a circular track, a satellite orbiting the Earth, and a ball on a string being swung in a circle.
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What are the four fundamental forces in physics?
The four fundamental forces in physics are the gravitational force, the electromagnetic force, the weak force, and the strong force.
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What dominates at the largest mass and distance scales?
Gravity dominates at the largest mass and distance scales because its effects are proportional to the mass of the objects involved.
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What is the Gravitational Force?
The gravitational force is the force of attraction between two masses.
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What is the formula for Gravitational Force?
F \= G * (m1 * m2) / r^2
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What is the Coulomb's Law?
Coulomb's Law describes the attractive or repulsive force between two charged objects.
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What is the formula for Electric Force?
F \= k * (q1 * q2) / r^2
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What is Gravitational Acceleration?
Gravitational acceleration is the acceleration experienced by an object due to the force of gravity.
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What is the formula for Gravitational Acceleration?
g \= G * M / r^2
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What is the value of gravitational acceleration on Earth?
On Earth, the value of gravitational acceleration is approximately 9.81 m/s^2.
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What happens to an object in free fall?
If an object is in free fall, the gravitational force is the only force being exerted on the object.
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What is the formula for Gravitational Field?
g = Gm/r^2
