
AP Physics 1 - S2W10
Flashcard
•
Science
•
11th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the relationship between the speed of a satellite and its orbital radius?
Back
The speed of a satellite in a circular orbit is inversely proportional to the square root of its orbital radius. As the radius increases, the speed decreases.
2.
FLASHCARD QUESTION
Front
Define gravitational potential energy (U) in the context of a satellite orbiting Earth.
Back
Gravitational potential energy (U) is the energy an object possesses due to its position in a gravitational field, calculated as U = -G(m1*m2)/r, where G is the gravitational constant, m1 and m2 are the masses, and r is the distance between their centers.
3.
FLASHCARD QUESTION
Front
What is the principle of conservation of energy in a mechanical system?
Back
The principle of conservation of energy states that the total energy in a closed system remains constant over time. Energy can neither be created nor destroyed, only transformed from one form to another.
4.
FLASHCARD QUESTION
Front
Explain the concept of rolling without slipping.
Back
Rolling without slipping occurs when an object rolls on a surface such that the point of contact is momentarily at rest relative to the surface, meaning the linear speed of the center of mass equals the angular speed times the radius.
5.
FLASHCARD QUESTION
Front
What is angular momentum and how is it conserved in a system?
Back
Angular momentum (L) is the rotational equivalent of linear momentum, defined as L = Iω, where I is the moment of inertia and ω is the angular velocity. Angular momentum is conserved in a system when no external torques act on it.
6.
FLASHCARD QUESTION
Front
Define moment of inertia (I) and its significance in rotational motion.
Back
Moment of inertia (I) is a measure of an object's resistance to changes in its rotational motion, depending on the mass distribution relative to the axis of rotation. It is calculated as I = Σmr^2 for discrete masses.
7.
FLASHCARD QUESTION
Front
What is the relationship between kinetic energy and potential energy in a falling object?
Back
As an object falls, its gravitational potential energy decreases while its kinetic energy increases, maintaining the total mechanical energy constant in the absence of air resistance.
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