Question

A man running on a horizontal road at 8 km/h finds the rain falling vertically he increases his speed to 12km/h and find that the drops make angle 30 degree with the vertical. find the speed and dimensions of the rain with respect to the road.​

Answer 1

expert answer

A man running on a horizontal road at 8 km/h finds the rain falling vertically.He increases his speed to 12 km/h and finds that the drops make angle 30 degrees with the vertical.Find the speed and direction of the rw Answer:

Since when the person runs at 8 km/h the rain seems to be coming verticaly down thus the horizontal component of rain, Vx is 8 km/h

When he incrreases his relative speed by 4 km/h with the horizontal component of rain, it seems to fall at an angle of 30 degrees with the vertical.

It means the vertical component, Vy is: 4/Vy = tan 30

i.e.

Vy = 6.93 km/h

V = 10.58 km/h

and angle of falling is: tan-1(8/6.93)

Answer 2

Answer:

dint know................