Question

A man is standing on a road and observed that train is falling at angle ${45}^o$ with the vertical. The man starts running on te road with constant acceleration $0.5m/s^2$. the starts of the motion, it appears to him that rain is stil falling at angle ${45}^o$ with the vertical, with speed $2\sqrt{2}$ m/s. Motion of the man is in the same vertical plane in which the rain is falling. Then which of the following statement (s) is/are TRUE:

• A. It is not possible
• B. Speed of the rain relative to the ground is 2 m/s
• C. Speed of the man when he finds rain to be angle ${45}^o$ with the vertical, is 4 m/s.
• D. The man has travelled a distance 16 m on the road by the time he again fnds rain to be falling at angle ${45}^o$

Answer 1

Answer: (C), (D)

The correct options are
C Speed of the man when he finds rain to be angle ${45}^o$ with the vertical, is 4 m/s.
D The man has travelled a distance 16 m on the road by the time he again fnds rain to be falling at angle ${45}^o$