rain drops are falling with the velocity of v=4i-4j m/s. if a man is walking in a horizontal road with a velocity of i m/s along with an umbrella then the direction of umbrella to avoid rain

Q. A man is walking at a speed $3m/s$ rain drops are falling vertically with a speed $3m/s$:
(i) What is the velocity of rain drop with respect to the man?
(ii) At what angle from vertical, the man should hold his umbrella?

Q. A man is walking on a road with a velocity $3km/h$. Suddenly rain starts falling. Velocity of rain is $10km/h$ in vertically downward direction. The relative velocity of the rain with respect to man is

Q. A man is walking on a road with a velocity $3\text{km/hr}$. Suddenly rain starts falling. The velocity of rain is $10\text{km/hr}$ in a vertically downward direction. The relative velocity of the rain with respect to man is -

Q. A man is walking on a road with a velocity $3\text{km/hr}$. Suddenly rain starts falling. The velocity of rain is $10\text{km/hr}$ in vertically downward direction. The relative velocity of the rain with respect to man is -

Q. A man at rest observes that rain is falling vertically downwards. When he moves with a velocity of $3\text{km/h}$, he holds an umbrella at an angle of ${37}^{\circ }$ from the vertical to avoid rain. The velocity of the rain with respect to man is