I. A scalar quantity has only magnitude
II. A scalar quantity has both magnitude and direction
III. A vector quantity has both magnitude and direction
IV. A vector quantity has only magnitude.
Which of the above statement is/are correct?
A scalar quantity has a magnitude only, which means it tells you how much of something there is, but it does not provide any information about direction.e.g temperature.
A vector quantity includes both magnitude and direction. This means it tells you how much and also which way something is happening. e.g velocity
Therefore, I and III are correct.
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