Question

A man moving horizontally towards north with speed of 10km/hr feels that the raindrops are
falling on his face at an angle of 30° with the vertical. The speed of raindrops will be (Assume
that air is still):​

Answer 1

Answer:

Given:

Vertical component =3kmh

−1

Horizontal component (velocity of man) =4kmh

−1

Resultant =

v

x

2

+v

y

2

=

9+16

=5kmh

−1

Hence relative velocity of rain on the man is 5kmh

−1

Answer 2

Answer:

Given:

Vertical component =3kmh

−1

Horizontal component (velocity of man) =4kmh

−1

Resultant =

v

x

2

+v

y

2

=

9+16

=5kmh

−1

Hence relative velocity of rain on the man is 5kmh

−1

Hence option D is correct.

solution