A body falling in vacuum with some speed then which of the following is true:
Correct answer: C. No terminal velocity
- A. The terminal velocity will be very large
- B. The terminal velocity will be very small
- C. No terminal velocity
- D. Constant terminal velocity
Explanation
In a vacuum, a falling body experiences no air resistance, allowing it to continually accelerate under the influence of gravity. As a result, it will not reach a terminal velocity, which occurs when the force of air resistance equals the gravitational force. Therefore, the correct answer is that there is 'No terminal velocity'. Other options incorrectly assume the presence of air resistance or suggest the existence of a terminal velocity, which is not applicable in a vacuum.
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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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