Questions and Answers
What is scalar quantity?
A quantity that has magnitude but no particular direction.
What is vector quantity?
A quantity that has magnitude and acts in a particular direction.
Scalar quantities include:
Scalar quantities change when?
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Vector qualities include:
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Vector quantities change when?
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What quantity is speed?
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Why is speed a scalar quantity?
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The difference in two vector quantities is?
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The difference in two scalar quantities is?
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Study Notes
Scalar and Vector Quantities
- Scalar quantity has magnitude only, with no specific direction.
- Vector quantity possesses both magnitude and direction.
Examples of Scalar Quantities
- Distance: Measurement of space between two points.
- Speed: Rate of change of distance without regard to direction.
- Time: Measured duration of events.
- Power: Rate of doing work or energy transfer.
- Energy: Capacity to do work.
Characteristics of Scalar Quantities
- Change occurs only when the magnitude changes.
Examples of Vector Quantities
- Displacement: Change in position in a specific direction.
- Velocity: Speed in a given direction.
- Acceleration: Rate of change of velocity.
- Force: Interaction that causes an object to change motion.
- Weight: Gravitational force acting on an object, dependent on mass and gravity.
- Momentum: Product of an object’s mass and its velocity.
Characteristics of Vector Quantities
- Change occurs if magnitude changes, direction changes, or both change.
Key Definitions
- Speed is classified as a scalar quantity due to its lack of directional component.
- Velocity is a vector quantity because it includes both speed and direction.
Vector Difference Calculation
- The difference between two vector quantities is calculated as final vector minus initial vector.
Scalar Difference Calculation
- The difference between two scalar quantities is calculated as large value minus small value.
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Description
Test your knowledge on scalar and vector quantities with these flashcards. Understand the definitions and examples of each, and learn the fundamental differences between these two types of measurements. Perfect for students studying physics or related subjects.
