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(a)

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Graph:

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(1) Draw the coordinate plane.

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(2) Plot all the points.

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(3) Connect the plotted points to a smooth curve.

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Observe the graph:

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The speed of the object is increased initially

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After some time, the speed of the object remains constant.

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(b)

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There appears to be a limiting speed of the object.

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The reason may be maintaining the constant speed or air resistance.

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(a) Graph:

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(b)

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There is a limiting speed of the object.

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The reason may be maintaining the constant speed or air resistance.