A body of mass 𝑚 is thrown upwards at an angle θ with the horizontal with velocity 𝑣. While rising up the velocity of the mass after 𝑡 second will be

Question : A body of mass 𝑚 is thrown upwards at an angle θ with the horizontal with velocity 𝑣. While rising up the velocity of the mass after 𝑡 second will be

(A) $\sqrt{\left( v\cos \theta \right) ^{2}+\left( v\sin \right) ^{2}}$

(B) $\sqrt{\left( v\cos \theta -v\sin \theta \right) ^{2}-gt}$

(C) $\sqrt{v^{2}+g^{2}t^{2}-\left( 2v\sin \theta \right) gt}$

(D) $\sqrt{v^{2}+g^{2}t^{2}-\left( 2v\cos \theta \right) gt}$