1.

A particle is moving on a circular path of radius r with uniform velocity v. The change in velocity when the particle moves from \[P\] to \[Q\] is \[(\angle POQ={{40}^{{}^\circ }})\]

A. \[2v\,\cos \,40{}^\circ \]
B. \[2v\,\sin 40{}^\circ \]
C. \[2v\,\sin \,20{}^\circ \]
D. \[2v\,\cos \,20{}^\circ \]
Answer» D. \[2v\,\cos \,20{}^\circ \]


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