Question

During a rainy day, rain is falling vertically with a velocity 2 m/s. A boy at rest starts his motion with a constant acceleration of 2m/s.s along a straight road. find the rate at which the angle of the axis of umbrella should be changed so that the rain always falls parallel to the axis of umbrella

Answer 1

here rain drop is falling vertically I.e at right angle.now as per this statement the angle of the axis of umbrella should be 90 degree so that the rain always falls parallel to the axis of umbrella
hope it will help you