on a particular day, raindrops are falling vertically at a speed of 5m/s a man holding a plastic board - Physics - Motion In A Plane

Question

on a particular day, raindrops are falling vertically at a speed
of 5m/s a man holding a plastic board is running to escape from
rain the lower end of board makes 45 degree angle with the
horizontal and is at a height equal to half that of man the maximum
speed of the man so that his feet do not get wet is ___?

Pratyay Ghosh · Accepted Answer

<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/images/man_rain%20png"
style="width: 400px; height: 317px;">
The maximum speed of the man should be
tan 450=v5⇒v=5 m/s