IB Physics SL A.2.10 Viscous drag Question Bank
Practise IB Physics SL A.2.10 by explaining viscous drag, terminal speed and the balance of vertical forces in a fluid.
- Syllabus
- First assessment 2025
- Course
- Physics SL
- Level
- SL
Exam points
- Identify the drag force when an object moves at terminal speed through a fluid.
- Explain how drag changes as speed increases and acceleration falls.
- Interpret a velocity-time graph to identify the approach to terminal speed.
A.2.10—Viscous drag question 1
A spherical oil droplet is released from rest at the bottom of a column of water.
The graph shows the variation with time t of the vertical velocity of the oil droplet.
Question (a)
(a)
Describe why the acceleration of the oil droplet changes.
[ 2 ]
Question (b)
(b)
Explain why the velocity of the oil droplet is constant for .
[ 2 ]
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