Raindrops

The train is moving at a speed of 60 km/h. Raindrops falling vertically in the absence of wind (with uniform movement due to the action of air resistance) leave traces on the windows of the train, deviating from the vertical direction by 30°. How fast are the drops falling?

Correct answer:

v2 =  103.923 km/h

Step-by-step explanation:

v1=60 km/h α=30   tan α = v1:v2  v2=v1/tanα=v1/tan30° =60/tan30° =60/0.57735=103.92305 km/h  v22=v2 m/s=v2:3.6  m/s=103.923:3.6  m/s=28.868 m/s



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