WAEC Physics 2014 Objective — Question 1
Question 1 of 50 from the West African Examinations Council (WAEC) Physics 2014 Objective paper, with the correct answer and a full explanation.
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A ball falling through a viscous liquid is acted upon by
- A. upthrust only
- B. upthrust and the ball's weight
- C. the ball's weight and viscous force
- D. upthrust, the ball's weight and viscous forceCorrect
Explanation
Three forces act on a ball falling through a viscous liquid: its weight (down), the upthrust (up), and the viscous drag force (up, opposing motion).
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