A man moving with a velocity of 5 m/s on a horizontal road observes that raindrops fall at an angle of 45∘ with the vertical. When he moves with a velocity of 16 m/s along an inclined plane, which is inclined at 30∘ with the horizontal, he observes raindrops falling vertically downward as shown in the figure. Find the actual velocity →Vr of the raindrops.