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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 & Vector Quantities Physics Seo
What is a Vector? • Length from one point to another • Holds BOTH Magnitude (aka. Size) AND Direction • Some Examples: • velocity • displacement • acceleration • force
What is a Scalar? • Amount or size of quantity • Holds only Magnitude (aka. Size) • Some Examples: • speed • distance • mass • energy • power
Distance vs. Displacement Physics Seo
Distance • How far something is • Measured in terms of meters (m) • In physics, symbol is • For Example: • Josh ran 10 meters
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
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
Speed vs. Velocity Physics Seo
Speed • How fast an object is traveling • Represented as • Example: • Josh rushed to his house at a speed of 80 mph
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
Average Speed, Average Velocity • Object’s fastness or slownessequation: • Average velocity also has direction
Acceleration Physics Seo
Acceleration • How fast over a period of given time • V • Units