Give the magnitude and direction of the ...

Give the magnitude and direction of the net force acting on
(a) a drop of rain falling down with a constant speed
(b) a crok of mass 10 g floating on water
(c) a kite skilfully held stationary in the sky
(d) a car moving with a constant velocity of `30 kh//h` on a rough road
(e) a high speed electron in space free from all gravitational objects and free of electric and magnetic fields.

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