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Published byMyra Bond Modified over 4 years ago

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1D Kinematics

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Distance Time (DT) Graph Slope of a DT graph gives speed D This is a graph of an object not moving. No slope = No speed T

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Distance Time (DT) Graph Slope of a DT graph gives speed D This is a graph of an object moving with constant speed. Straight line has one slope = one speed or constant speed T

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Distance Time (DT) Graph Slope of a DT graph gives speed D This is a graph of an object moving with changing speed. Increasing slope = increasing speed = accelerating T

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Distance Time (DT) Graph Slope of a DT graph gives speed D This is a graph of an object moving with changing speed. Decreasing slope = decreasing speed = Slowing down T

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Velocity Time (VT) Graph Slope of a VT graph gives Acceleration V This is a graph of an object moving with constant velocity. No slope = No acceleration T

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Velocity Time (VT) Graph Slope of a VT graph gives Acceleration V This is a graph of an object moving with constant acceleration. Straight line has one slope = one or constant acceleration T

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Velocity Time (VT) Graph Slope of a VT graph gives Acceleration V This is a graph of an object moving with changing slope. Increasing slope = increasing speed=non-uniform acceleration T

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Velocity Time (VT) Graph Slope of a VT graph gives acceleration V This is a graph of an object moving with Non uniform acceleration. Decreasing slope = decreasing acceleration T

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Velocity Time (VT) Graph Area under a VT graph gives displacement V Here the area under the graph is a triangle Area = ½ Base x Height T

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Velocity Time (VT) Graph Area under a VT graph gives displacement V Here the area under the graph is a triangle and a rectangle Area = [½ Base x Height] + [Length x Width] T

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Actual distance covered is called distance The distance from the origin is called displacement Difference between Distance and Displacement

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Distance is always positive, but Displacement can be either positive or negative Distance is a scalar Displacement is a vector Difference between Distance and Displacement

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Speed is only magnitude Velocity gives you a magnitude and a direction Difference between Speed and Velocity

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Speed is always positive Velocity can be either positive or negative Speed is a scalar Velocity is a vector Difference between Speed and Velocity

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Speed = Distance/time ( V=∆d/ ∆ t) Unit of speed in metric system is m/s Constant Speed or Velocity 1

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Slope of a VT graph gives acceleration a = ∆V/∆t Or a = V f – V i /t Or Acceleration V f = V i + at 3

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a = g = 9.8m/s 2 or 10m/s 2 That means an object will increase speed at the rate 10m/s every second Since Gravity acts in the downward direction, objects speed up when dropped and slow down when thrown up. Acceleration due to Gravity

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a) Information not given, don’t know b) Zero c) 10m/s d) -10m/s When a ball is thrown up, what is the velocity at the tippity top?

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a) Information not given, don’t know b) Zero c) 10m/s 2 d) -10m/s 2 When a ball is thrown up, what is the acceleration at the tippity top?

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Using V f = V i + at And Av. Velocity= (V f +V i )/2 And V=d/t We get 4 th Equation V f 2 = V i 2 + 2ad 4

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Using V f = V i + at And Av. Velocity= (V f +V i )/2 And V=d/t We also get 5 th Equation d=V i t+(½)at 2 5

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