The drag force decreases as the speed of an object moving through fluid _.
Correct answer: B. Decreases
- A. Increases
- B. Decreases
- C. Remains constant
- D. Both B and C
Explanation
Drag force is a resistive force, which can only increase as forward force increases. This is in accordance with Newton's Law that every force has an equal and opposite force acting on it.
This question appeared on the UHS MDCAT 2008 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Fluid Drag
Fluid drag is the resistive force exerted by a liquid or gas on an object moving through it, and its value depends on speed, fluid density, shape and exposed area. Questions examine drag at low and high speeds, terminal velocity when drag balances weight, and the difference between drag and ordinary solid friction.
Practise Fluid Dynamics
363 free Fluid Dynamics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Fluid Drag questions
The drag force on an object when it is moving in a fluid is 'F'. If the velocity of the object becomes double, then the value of force will become
The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is__________________?
ML-1 T-2 is the dimension of_______________?
In Milikan's Method, the radius of droplet can be calculated by:
A bullet train is lifted above the rails due to magnetic effect, thus friction is reduced to minimum and speed can be enhanced up to:
Stokes' Law for steady motion in a fluid of infinite extent is given by: