If a fluid drops or object moves downwards with constantspeed through a fluid, it's acceleration is:
Correct answer: C. 0
- A. g
- B. a > g
- C. 0
- D. constant
Explanation
Constant speed implies zero acceleration (no change of velocity).
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About Fluid Dynamics
Fluid flow is described through speed, pressure and density, including steady flow and the equation of continuity for conserving mass. Bernoulli's equation relates pressure, speed and height, while fluid drag and terminal velocity explain why a falling object eventually moves at constant speed when drag balances its weight.
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