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Published byJeffrey Ross Modified over 6 years ago

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Motion in One Dimension

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Displacement

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x = x f - x i

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Average Velocity V avg = x/ t v avg = (x f – x i )/(t f – t i )

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Velocity has magnitude and direction (25 mph west) Speed has only magnitude (25 mph)

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Finding Velocity Graphically Slope = rise / run = y / x V avg = x / t

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position (m) time (s)

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Acceleration the rate of change of velocity a avg = v / t

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Since velocity has magnitude and direction and a avg = v / t acceleration has magnitude and direction

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Finding Acceleration Graphically Slope = rise / run = y / x a avg = v / t

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velocity (m/s) time (s)

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Distance (m) photo over 2 s Red ball Displacement? Average velocity? Average acceleration?

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with constant acceleration v avg = x / t = (v i + v f ) / 2 x = ½(v i + v f ) t

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