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Physics Intro & Kinematics

1 Physics Intro & Kinematics Quantities Units Vectors Displacement velocity Acceleration Kinematics Graphing Motion in 1-DSome Physics QuantitiesVector - quantity with both magnitude (size) and directionScalar - quantity with magnitude onlyVectors: Displacement velocity Acceleration Momentum ForceScalars: Distance Speed Time Mass EnergyMass vs. WeightOn the moon, your mass would be the same, but the magnitude of your weight would be Scalar (no direction) Measures the amount of matter in an objectWeight Vector (points toward center of Earth) Force of gravity on an objectVectors The length of the arrow represents the magnitude (how far, how fast, how strong, etc, depending on the type of vector).

up, slow down, or change direction; the rate at which velocity changes Speed vs. Velocity • Speed is a scalar (how fast something is moving regardless of its direction). Ex: v = 20 mph • Speed is the magnitude of velocity. • Velocity is a combination of speed and direction. Ex: v = 20 mph at 15° south of west • The symbol for speed is v.

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