Podcast
Questions and Answers
Independent variables are represented on the horizontal line known as the ______, while dependent variables are on the vertical line known as the y-axis.
Independent variables are represented on the horizontal line known as the ______, while dependent variables are on the vertical line known as the y-axis.
x-axis
Variance measures the squared ______ of each number in the set from the mean.
Variance measures the squared ______ of each number in the set from the mean.
deviation
Work is a ______ quantity.
Work is a ______ quantity.
scalar
Systematic errors result from the measuring instrument or the design of the ______.
Systematic errors result from the measuring instrument or the design of the ______.
The accepted SI unit in speed and ______ is meter per second.
The accepted SI unit in speed and ______ is meter per second.
Acceleration measures the rate of change in ______ with respect to time.
Acceleration measures the rate of change in ______ with respect to time.
Uniform motion involves changing velocity and non-zero acceleration.
Uniform motion involves changing velocity and non-zero acceleration.
Random errors result from predictable changes occurring during data measurement.
Random errors result from predictable changes occurring during data measurement.
Vector quantities have both a magnitude and a direction.
Vector quantities have both a magnitude and a direction.
Displacement is the longest distance between the initial and final positions.
Displacement is the longest distance between the initial and final positions.
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Study Notes
Graphical Representation
- Independent variables are plotted on the x-axis (horizontal), while dependent variables are on the y-axis (vertical).
- A graph serves as a 2-D visual tool to illustrate the relationship between these variables.
Motion and Measurement
- Acceleration indicates how velocity changes over time.
- Velocity is defined as the displacement of an object within a specific time frame.
- Displacement refers to the shortest path between the initial and final positions of an object.
Errors in Measurement
- Random errors are unpredictable fluctuations that occur during data collection.
- Systematic errors are due to flaws in measurement tools or experimental design, affecting overall accuracy.
- Error is the difference between measured values and expected values.
- Variance quantifies how much each number in a data set deviates from the mean.
- Accuracy reflects how close a measurement is to the actual value, while precision indicates the consistency of repeated measurements.
Motion Characteristics
- Uniform motion is characterized by constant velocity and zero acceleration; an example is the rotation and revolution of the Earth.
Measurement Concepts
- Work is categorized as a scalar quantity, possessing only magnitude and no direction.
- Measurement involves assigning numerical values to physical properties of an object, using established standards for comparison.
Vectors
- A vector is a physical quantity with both magnitude and direction, essential in motion analysis.
- The component method for computing vectors includes calculating sine in the y-components.
- The standard SI unit for both speed and velocity is meter per second (m/s).
Graphical Representation
- Independent variables are plotted on the x-axis (horizontal), while dependent variables are on the y-axis (vertical).
- A graph serves as a 2-D visual tool to illustrate the relationship between these variables.
Motion and Measurement
- Acceleration indicates how velocity changes over time.
- Velocity is defined as the displacement of an object within a specific time frame.
- Displacement refers to the shortest path between the initial and final positions of an object.
Errors in Measurement
- Random errors are unpredictable fluctuations that occur during data collection.
- Systematic errors are due to flaws in measurement tools or experimental design, affecting overall accuracy.
- Error is the difference between measured values and expected values.
- Variance quantifies how much each number in a data set deviates from the mean.
- Accuracy reflects how close a measurement is to the actual value, while precision indicates the consistency of repeated measurements.
Motion Characteristics
- Uniform motion is characterized by constant velocity and zero acceleration; an example is the rotation and revolution of the Earth.
Measurement Concepts
- Work is categorized as a scalar quantity, possessing only magnitude and no direction.
- Measurement involves assigning numerical values to physical properties of an object, using established standards for comparison.
Vectors
- A vector is a physical quantity with both magnitude and direction, essential in motion analysis.
- The component method for computing vectors includes calculating sine in the y-components.
- The standard SI unit for both speed and velocity is meter per second (m/s).
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