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AP Physics 1: Algebra-Based 8.4 Fluids and Conservation Laws Questions

Apply fluid-energy conservation to connect pressure, speed and height through Bernoulli airflow effects and Torricelli outflow comparisons.

Syllabus
Effective Fall 2024
Course
AP Physics 1: Algebra-Based

Exam points

  • apply Bernoulli's principle to predict pressure-driven liquid-level changes from faster airflow
  • use Torricelli's theorem to compare outflow speeds from openings at different depths

Covered syllabus points

8.4.A—Describe the flow of an incompressible fluid through a cross-sectional area by using mass conservation8.4.B—Describe the flow of a fluid as a result of a difference in energy between two locations within the fluid– Earth…

Question 1

[Maximum number: 1]

A container of water (pictured below) has two holes in its side allowing two streams of water to emerge as shown. Initially, the lower hole is twice as deep as the higher hole. Which statement best compares the initial velocities of these two streams of water?

Figure for Question 1 — AP Physics 1: Algebra-Based
A

They emerge at the same speed.

B

The lower stream emerges 21/22^{1/2} times as fast as the upper stream.

C

The lower stream emerges 2 times as fast as the upper stream.

D

The lower stream emerges 4 times as fast as the upper stream.

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