Question

43. When a person walks on a straight road with aspeed 10 km/h, rain appears to fall verticallydownward. As he stops, the rain appears to fall atan angle 30' with the vertical. The speed of rainwith respect to ground is 3 0(1) 20 kmh 12) 1033 km/h(3) 10 km/h (4) 20/3 km/h​

Answer 1

Answer:

10√3 is the answer

Explanation:

as we know

tan0= Velocity of man/velocity of rain. with vertical in forward direction

so according to question

theta =30°,Vm=10,Vr=?

tan30°= 10/Vr

1/√3=10/Vr

so,

Vr=10√3km/hr