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Published byBelinda Underwood Modified over 5 years ago

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1 Lesson 1: Physics 150 / 215 Describing Motion Basic Terms & Units of measurement –distance & displacement –speed & velocity –acceleration Analyzing Motion –diagrams –graphs –equations Problem Solving

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2 Distance & Displacement Distance –Total distance traveled –measured in Standard International (SI) units meters –This is a scalar quantity and is always positive Displacement –Straight line pointing from start of motion to the ending point –This is a vector quantity

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3 Vector Properties Vector quantities: 2 properties –magnitude the size of the vector it is always a positive number –direction In 2D or more this involves angles and +/- signs in 1D this only involves +/- signs.

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4 Angles Angles and Simple Trig. r s SI units are RADIANS

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5 Basic Trig. Trig: c a b

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6 Speed –Average total distance traveled divided by total time taken –Instantaneous rate at which the distance traveled is changing with time in the direction of motion (always +ve)

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7 Velocity & Speed –Average total displacement divided by total time taken –Instantaneous rate at which the displacement is changing with time. –Instantaneous speed magnitude of instantaneous velocity (always +ve) Velocity & Speed

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8 SI units

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9 Acceleration –Average change of velocity divided by time taken for change –Instantaneous rate at which the velocity is changing with time. –Scalar acceleration magnitude of instantaneous acceleration (always +ve) Acceleration

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10 SI units

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11 Functional Notation

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12 Kinetic Equations of Motion

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