When the body moves with terminal velocity the acceleration in the body become_____________?
Correct answer: A. 0
- A. 0
- B. Maximum
- C. Variable
- D. Infinite
Explanation
At terminal velocity, the upward drag force balances the body's effective downward weight, so the net force is zero and Newton's second law gives acceleration a = 0 m/s². Students may choose variable acceleration because the body accelerates before reaching terminal speed, but acceleration is zero once terminal velocity is established.
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About Terminal Velocity
Terminal velocity is the constant speed reached when gravitational force is balanced by fluid resistance. The topic covers drag, buoyant force, the conditions for zero acceleration, and how viscosity, object size, shape and density affect the limiting speed, with a distinction between free fall before and after terminal velocity.
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