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 $(\angle POQ = {40^o})$
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 $(\angle POQ = {40^o})$
- A
$2v\cos {40^o}$
- B
$2v\sin {40^o}$
- C
$2v\sin {20^o}$
- D
$2v\,\cos {20^o}$
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