When an object moves with a terminal velocity, then the acceleration of the object will
Correct answer: B. 0 m/s2
- A. -9.8 m/s2
- B. 0 m/s2
- C. 4.9 m/s2
- D. 9.8 m/s2
Explanation
When an object moves with a terminal velocity, the net force acting on it becomes zero because the drag force equals the gravitational force. As a result, the acceleration of the object is 0 m/s2. This is why option B is correct. Options A and D suggest that the object is still accelerating, which is not the case when terminal velocity is reached. Option C provides an arbitrary acceleration value, which does not correspond to the concept of terminal velocity.
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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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