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Scalar and Vector Quantities in Physics

Learn the difference between scalar and vector quantities in physics, including distance, displacement, speed, velocity, and acceleration. Discover how these concepts are measured and represented with examples.

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Scalar and Vector Quantities in Physics

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  1. Scalar & Vector Quantities Physics Seo

  2. What is a Vector? • Length from one point to another • Holds BOTH Magnitude (aka. Size) AND Direction • Some Examples: • velocity • displacement • acceleration • force

  3. What is a Scalar? • Amount or size of quantity • Holds only Magnitude (aka. Size) • Some Examples: • speed • distance • mass • energy • power

  4. Distance vs. Displacement Physics Seo

  5. Distance • How far something is • Measured in terms of meters (m) • In physics, symbol is • For Example: • Josh ran 10 meters

  6. Displacement • Distance in a specific direction • Δ= change in distance ; Δ (“Change in”) • Δ = xf • Can also be positive or negative • Position vs. time graph (x vs t graph) • Units • meters or • Example: • Josh ran 10 meters to the East

  7. Practice • 1) James hiked 30 meters • ANS: Distance • 2) Thomas walked 80 meters backwards • ANS: Displacement • 3) Christine left the house and walked 10 meters • ANS: Distance

  8. Speed vs. Velocity Physics Seo

  9. Speed • How fast an object is traveling • Represented as • Example: • Josh rushed to his house at a speed of 80 mph

  10. Velocity • How fast an object is traveling in a specific direction • Variable • = • Units • Example: • Josh rushed to his house at a speed of 80 mph East

  11. Average Speed, Average Velocity • Object’s fastness or slownessequation: • Average velocity also has direction

  12. Acceleration Physics Seo

  13. Acceleration • How fast over a period of given time • V • Units

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