Which of the following is an example of motion in three dimensions?

A cricket ball thrown vertically upwards

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A train moving on a straight track

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A car which is racing on a formula one track

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The flight of a feather in wind

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Solution

The correct option is D
The flight of a feather in wind

If the path of a body can be represented by a straight line, then, it is motion in one dimension. If the path can be traced on a plane but not represented as a straight line, then, it is motion in two dimensions. If the path cannot be traced on a plane, then, it is motion in three dimensions. In this case, the flight of a feather is motion in three dimensions. The motion of the car is in one dimension. The motion of the cricket ball and train moving on straight line are in one dimension.

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