Question

Rain is falling with a speed of 4mus is a direction
making an angle of 30" with vertical towards south
What should be the magnitude and direction of
velocity of cyclist to hold his umbrella exactly
vertical, so that rain does not wet him ?​

Answer 1

Answer:

Explanation:

In order to protect herself from the rain, the woman must hold her umbrella in the direction of the relative velocity (v) of the rain with respect to the woman.

tanθ=v  

c  /v r  

=10/30

θ=18degree

 

Hence, the woman must hold the umbrella toward the south, at an angle of nearly 18 with the vertical.