# A body of mass 𝑚 is projected at an angle of 45° with the horizontal. If air resistance is negligible, thentotal change in momentum when it strikes the ground is

Question : A body of mass 𝑚 is projected at an angle of 45° with the horizontal. If air resistance is negligible, then total change in momentum when it strikes the ground is

(A) 2𝑚v

(B) $\sqrt{2}mv$

(C) 𝑚𝑣

(D) $\dfrac{mv}{\sqrt{2}}$