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Questions and Answers
What branch of physics describes the motion of objects without reference to their cause?
What branch of physics describes the motion of objects without reference to their cause?
- Dynamics
- Kinematics (correct)
- Statics
- Thermodynamics
Which concept of motion does modern physics hold as undeterminable?
Which concept of motion does modern physics hold as undeterminable?
- Relative motion
- Absolute motion (correct)
- Uniform motion
- Circular motion
What is the term for an object not in motion relative to a given frame of reference?
What is the term for an object not in motion relative to a given frame of reference?
- In motion with constant velocity
- In free fall
- In equilibrium
- At rest (correct)
Which physical quantity is used to mathematically describe motion in terms of both magnitude and direction?
Which physical quantity is used to mathematically describe motion in terms of both magnitude and direction?
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What branch of physics studies forces and their effect on motion?
What branch of physics studies forces and their effect on motion?
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Study Notes
Kinematics and Dynamics
- Kinematics is the branch of physics that describes the motion of objects without reference to their cause.
- In modern physics, the concept of motion held as undeterminable is velocity at a precise point in time.
Rest and Motion
- An object not in motion relative to a given frame of reference is said to be at rest.
Mathematical Description of Motion
- The physical quantity used to mathematically describe motion in terms of both magnitude and direction is a vector.
Forces and Motion
- The branch of physics that studies forces and their effect on motion is dynamics.
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