A spaceship of speed $v_0$ travelling along $+ y$ axis suddenly shots out one fourth of its part with speed $2v_0$ along $+ x$ -axis. $xy$ axes are fixed with respect to ground. The velocity of the remaining part is
A spaceship of speed $v_0$ travelling along $+ y$ axis suddenly shots out one fourth of its part with speed $2v_0$ along $+ x$ -axis. $xy$ axes are fixed with respect to ground. The velocity of the remaining part is
- A
$\frac{2}{3}{v_0}$
- B
$\frac{{\sqrt {20} }}{3}{v_0}$
- C
$\frac{{\sqrt 5 }}{3}{v_0}$
- D
$\frac{{\sqrt {13} }}{3}{v_0}$
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