Question

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Answer 1

Answer:

Explanation:

Terminal velocity is directly proportional to the square of the radius of the spherical body.

Since mass is conserved and density remains same, upon coalesceing, the volumes will add up.

Thus, volume of bigger drop == 64 times the volume of each small drop. Since volume is directly proportional to cube of radius, this implies that the radius of the big drop is 4 times the radius of each small drop.

Therefore, terminal velocity of the big drop is 4 square == 16 times the terminal velocity of each small drop =1.5\times16=24ms^{-1}=1.5×16=24ms

−1

Answer 2

the correct answer is

A) 10m/s

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