What is the source of KE of falling rain drops ?

What is the source of kinetic energy for falling rain drops?

What is the source of the kinetic energy of the falling rain drop?

Where from the kinetic energy of falling rain drops come?

A man is travelling at 10.8 kmph in a topless car on a rainy day. He holds an umbrella at an angle of 37^@ with the vertical to protect himself from rain which is falling vertically downwards. What is the velocity of the rain drop ?

A man is travelling at 10.8 kmph in a topless car on a rainy day. He holds an umbrella at an angle of 37^@ with the vertical to protect himself from rain which is falling vertically downwards. What is the velocity of the rain drop ?

What is the resultant force on a drop of rain falling down with constant speed ?

Which falls faster , big rain drops or small rain drops ?