Question

A standing man observes rain falling vertically with a velocity 20m/s at an angle 30degree with the vertical?1.Find the velocity with which the man should mode so that rain appears to fall vertically to him.2. Now if he further increases his speed rainagain appears to fall at 30degree with the vertical.Find his new velocity.​

Answer 1

Answer:

10 m/s

20 m/s

Explanation:

A standing man observes rain falling vertically with a velocity 20m/s at an angle 30degree with the vertical

=> Rain Horizontal Velocity = 20Sin30 = 10 m/s

The velocity with which the man should walk so that rain appears to fall vertically to him  = 10 m/s

if He Further increases his speed rain again appears to fall at 30degree

but in opposit direction Means Rain Velocity = -10 m/s

Man velocity now = 10 + 10 = 20 m/s