man is walking due east at the rate of of 3kmph and the rain is falling 30° east of vertical with a velocity of 4kmph the velocity of rain relative to the man will be?with figure​

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.