Question detail
Pressure and pressure differences in fluids (physics only) scenario: a velocity-time graph shows acceleration, steady speed, and deceleration. Which answer best addresses Pressure in liquids (physics only) and the objective to (Physics only) Describe upthrust as the upward force on an object in a fluid?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Pressure and pressure differences in fluids (physics only)
Question
- A. In the velocity graph scenario, apply upthrust to (Physics only) Describe upthrust as the upward force on an object in a fluid while keeping force versus pressure separate.
- B. In the velocity graph scenario, mix up force versus pressure and ignore upthrust.
- C. Use a general revision statement without applying Pressure in liquids (physics only) to the situation.
- D. Choose a different forces topic instead of explaining (Physics only) Describe upthrust as the upward force on an object in a fluid.
Answer
The correct answer is: In the velocity graph scenario, apply upthrust to (Physics only) Describe upthrust as the upward force on an object in a fluid while keeping force versus pressure separate.
Explanation
The correct option is In the velocity graph scenario, apply upthrust to (Physics only) Describe upthrust as the upward force on an object in a fluid while keeping force versus pressure separate.. It is correct because the scenario says a velocity-time graph shows acceleration, steady speed, and deceleration, which must be interpreted through Pressure in liquids (physics only). This directly supports the learning objective to (Physics only) Describe upthrust as the upward force on an object in a fluid. Use values 8, 10, and 20 only if the question asks for a calculation. The answer earns credit by naming the relevant force or motion quantity, using units when needed, and avoiding the boundary error force versus pressure.
Common mistake
Misunderstanding Upthrust
Students often confuse upthrust with buoyancy, thinking they are the same concept.
Clarify that upthrust is the upward force exerted by a fluid on a submerged object, while buoyancy refers to the overall effect of upthrust and the weight of the object.
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