. When a body falls through a viscous medium, its velocity


(A) first increases and then decreases

(B) first increases and then becomes constant, and this constant velocity is called critical velocity

(C) first increases and then becomes constant, and this velocity is called terminal velocity

(D) increases continuously

 

Best Answer

(C)

Therefore, air flows from the smaller to the bigger bubble.

The viscuous force and the buoyant force together balance the weight, and thus the body moves with constant velocity.

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