Question

44. If Vr, is the velocity of rain falling vertically and Vm is the
velocity of a man walking on a level road, and O is the angle
with vertical at which he should hold the umbrella to protect
himself, than the relative velocity of rain w.rit. the man is
given by:
(a) Vm = VV+ V2 + 2V, Vm cos o
(b) Vm= ? + V, 2 - 2 V, Vm cos
o
(d) Vm = √VV - v2²
(c) Vrm​

Answer 1

Answer:

I think it would be a b VM= ? - V,2 - 2 Vm cos

Answer 2

The man's velocity and the rain's velocity are depicted in the diagram below.

Step by step explanation:

a) Rain is forecasted to fall in the direction of a man rushing down the street. If the man is compelled to stand still, the direction of the rain velocity with regard to the man will be as illustrated in the diagram.

b) VRm=VRVm, as we all know.

We also know that VRm=VR+(Vm), hence the direction of rain velocity in relation to man is as depicted in the diagram above.

c) It is now assumed that the magnitude of rain velocity with respect to man is 1.5 times that of man.

As a result, |VRm|=1.5|Vm. We can deduce that sin=|Vm||VRm| after inserting the value