Question

A man moves on a horizontal road towards east at
a speed of 1 km/hr and the rain appears to him
vertical at a speed of 2 km/hr. The actual speed of
the rain (in km/hr) is
(1) 1
(2) √2
(3) √3
(4) √5​

Answer 1

here is your answer

or u can go with this tooo

The angle between the velocity of man and rain is 90° (As the man moves towards east, horizontally and the rain falls vertically).

So, the actual speed of the rain would be the vector sum of the man's velocity and rain's velocity

Therefore,

vr = 12 +22−−−−−−√ = 5√ km/hr

The answer is (4)

mark me as brainlest

Answer 2

Answer:

√5

Explanation:

let velocity of man = 1 i km/h

Vrm = Vr - Vm

- 2 j = Vr - i

Vr = -i + 2 j

| Vr | = √ (1)^2 + (2)^2

Vr = √ 5 km/hr

hope it will help you......