Question

A bird can fly in the air at a constant speed v. there is a wind of speed v1 blowing from the north. the bird has to move in the eastward direction. what is its speed ( in m/s) with respect to earth? take v1=18km/hr. v= 13m/s. if speed is 2x then find x.

Answer 1

as per me it's X=6m/s

Answer 2

Answer:

The value of x is 11.1m/s.

Explanation:

Given:

Here,

The speed of the wind in the south direction is denoted by $V_{1}$.

The speed of the bird in the north direction is denoted by V.

The speed of the bird with respect to the earth is denoted by S.

Now,

By the equation,

$S=\sqrt{V_{1} ^{2} +V^{2} } \\S= \sqrt{18^{2} +13^{2} } \\S=22.20m/s$

Then,

The speed of the bird with respect to the earth = 2x

22.20 = 2x

x = 11.1m/s

So, the value of x is 11.1m/s.