Which of the following statement is correct?
(I) Average speed of a vehicle doesn’t indicate variations in speed that have taken place during the journey.
(II) Average speed of a vehicle indicates the distance that a vehicle travelled in unit time.
(III) Average speed of a vehicle doesn’t indicate the direction in which vehicle travelled.

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Only (II) and (III)

Only (I) and (III)

Only (II)

Only (I), (II) and (III)

answer is D.

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Detailed Solution

Average speed is a scalar quantity.
Average speed does not indicate variations in speed that have taken place during the journey the distance per unit time does not change. It does not indicate the direction in which vehicle travelled but indicates the distance that a vehicle travelled in unit time.

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