A mosquito is moving with a velocity $\overrightarrow{ v }=0.5 t ^{2} \hat{ i }+3 t \hat{ j }+9 \hat{ k }\, m / s$ and accelerating in uniform conditions. What will be the direction of mosquito after $2 \,s$ ?
A mosquito is moving with a velocity $\overrightarrow{ v }=0.5 t ^{2} \hat{ i }+3 t \hat{ j }+9 \hat{ k }\, m / s$ and accelerating in uniform conditions. What will be the direction of mosquito after $2 \,s$ ?
- [JEE MAIN 2021]
- A
$\tan ^{-1}\left(\frac{2}{3}\right)$ from $x-$ axis
- B
$\tan ^{-1}\left(\frac{2}{3}\right)$ from $y$ -axis
- C
$\tan ^{-1}\left(\frac{5}{2}\right)$ from $y$ -axis
- D
$\tan ^{-1}\left(\frac{5}{2}\right)$ from $x$ -axis
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- [AIIMS 2009]