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Units and Measurement
Question
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A particle of mass m is moving with constant velocity parallel to X-axis. Does it possess angular momentum w.r.t. origin?

Answer

Yes. The particle possesses angular momentum about the origin. This is because for any particle moving with a constant velocity, angular momentum will remain conserved. 

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Some More Questions From Units and Measurement Chapter

To measure a physical quantity X, the unit U is repeatedly used for n times. What is the magnitude of physical quantity?

Does the numerical factor in the quantitative measurement depend on the system of unit used?

Is one unit sufficient to measure a physical quantity?

Can a physical quantity have two or more units? Give example.

What are fundamental quantities?

How many fundamental quantities are there in mechanics?

How many fundamental quantities are there in Physics?

Name the fundamental quantities of mechanics.