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AP Physics 1: Algebra-Based 4.2 A Describe the Impulse Delivered to an Object or System Questions

Relate impulse to force acting over time, and use signed force–time area or momentum–time slope to analyse changes in an object or system.

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

Exam points

  • calculate signed impulse or momentum change from the area under a force-time graph
  • use impulse and mass to determine final momentum, speed or direction
  • sketch or select a momentum-time graph by accumulating signed force-time area
  • determine net external force from the slope of a momentum-time graph
  • compare force magnitude and collision duration for interactions delivering the same impulse

AP Physics 1: Algebra-Based 4.2 A Describe the Impulse Delivered to an Object or System Questions question 1

[Maximum number: 2]

(12 points, suggested time 25 minutes)
A student hangs a spring of unknown spring constant k vertically by attaching one end to a stand, as shown in Figure 1. The other end of the spring has a small loop from which small cylinders can be hung. In addition to the spring, the student has access only to a variety of cylinders of unknown masses, a stopwatch, and a digital scale.

Using the data in the force-time graph, estimate the change in momentum of the cart from t=0.5 st=0.5 \mathrm{~s} to t=2.5 st=2.5 \mathrm{~s}. Briefly explain how you arrived at your estimation.

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