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General Physics

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 Joined: 20 Feb 2012 Post: 1
20 Feb 2012 12:53:30 IST
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Engineering Entrance , Medical Entrance , NEET , JEE Main , AIIMS , JEE Main & Advanced , Physics

we know that  time=displacement/velocity;

since displacement=vector,  velocity=vector;

now, time=vector/vector;

which is equalo to vector

but time is a scalar why????????????????????????????????????

Hot goIITian

Joined: 14 Feb 2012
Posts: 191
21 Feb 2012 11:29:45 IST
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Vector/Vector is always dimensionless..... it ll cancel  out.... soo time is dimensionless... nd hence is a scalar...

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Joined: 23 Jan 2007
Posts: 7958
22 Feb 2012 23:29:53 IST
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The formula time = displacement / velocity is applicable for the magnitude of the vectors. Division of vectors is not defined.

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