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(11)(a) (i) it is 3D motion... because the butterfly can move up or down or side ways ... i.e. it changes it's position in all of the 3 axis i.e. x axis, y-axis, z -axis
(ii) it is 1D motion cause the bus is traveling along straight line without change in it's direction... i.e. it is changing only one of it's axis say either x-axis or y-axis or z-axis
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◼(i) use integration method to determine from the given graph
-area under velocity-time graph gives displacement
-slope of velocity-time graph gives acceleration
-slope of displacement-time graph gives velocity
-area under acceleration-time graph gives rate of change of velocity
◼(ii) neither of them represents 1 D motion because it changes 2 axis simultaneously.... but for 1D motion we need only change in 1 axis...
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hope it helps you......
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