Engineering Board Exam Reviewer · Applications: Newton's Second Law and Motion · medium
An object falls from rest with air resistance according to dv/dt=9.8-0.2v. Find the terminal velocity as t ∞.
- 49 m/s
- 9.8 m/s
- 24.5 m/s
- 98 m/s
Answer
A. 49 m/s
Solution
At terminal velocity, dv/dt=0: 9.8-0.2v=0 v=49 m/s.
More Applications: Newton's Second Law and Motion questions
- A boat decelerates due to water resistance according to dv/dt=-0.5v, with initial velocity 20 m/s. Find the velocity after 4 seconds.
- A 5 kg object is subject to a net force F=10-2v (N), where v is velocity in m/s. Using Newton's second law, find the terminal velocity.
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