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Difficulty: EasyIdentifying Points of Disagreement

Two students discuss the factors that determine the terminal velocity of a falling object in Earth's atmosphere.

Student 1:
Terminal velocity is determined solely by the mass of the falling object. A heavier object experiences a stronger gravitational force, allowing it to accelerate to a higher speed before air resistance balances gravity. Therefore, an object's mass is the only factor that dictates its terminal velocity.

Student 2:
Terminal velocity is determined solely by the surface area of the falling object facing the direction of fall. An object with a larger surface area collides with more air molecules, increasing air resistance. Therefore, the shape and surface area of the object are the only factors that dictate its terminal velocity.

According to the passage, Student 1 and Student 2 differ in their views regarding which of the following factors determines the terminal velocity of a falling object?

  1. A
    The role of air resistance in balancing the gravitational force.
  2. The influence of the object's mass versus its surface area.Answer
  3. C
    The presence of a gravitational pull in Earth's atmosphere.
  4. D
    The existence of air molecules that collide with the falling object.

Answer

The influence of the object's mass versus its surface area.
The correct answer correctly identifies the main point of contention. Student 1 claims that mass is the sole factor determining terminal velocity, whereas Student 2 claims that surface area is the sole factor. Thus, they disagree on whether mass or surface area determines the terminal velocity.

Step-by-Step Solution

1
Identify Student 1's claim regarding what determines terminal velocity.
Student 1 states that terminal velocity is determined solely by the mass of the falling object.
To compare the viewpoints, we must first establish the core factor identified by the first student.
2
Identify Student 2's claim regarding what determines terminal velocity.
Student 2 states that terminal velocity is determined solely by the surface area of the falling object.
To find the point of disagreement, we must establish the core factor identified by the second student.
3
Compare the two claims to find where they directly conflict.
Student 1 argues for mass as the sole factor, while Student 2 argues for surface area as the sole factor. They disagree on whether mass or surface area determines terminal velocity.
Comparing the two identified factors reveals the primary point of disagreement.

Key Concept

Identifying Points of Disagreement
Estimated Time:45s
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Topics

Identifying Points of Disagreement

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