AP Physics 1 Unit 1 Progress Check FRQ Solutions Guide

AP Physics 1 Unit 1 Progress Check FRQ Solutions Guide

AP Physics 1 Unit 1 Progress Check provides solutions and scoring guidelines for free-response questions (FRQs) designed for high school physics students. This guide aids learners in understanding the concepts of motion, velocity, and acceleration through detailed explanations and examples. It covers essential kinematic equations and their applications in solving physics problems. Ideal for AP Physics students preparing for exams, this resource enhances problem-solving skills and comprehension of fundamental physics principles.

Key Points

  • Includes scoring criteria for AP Physics 1 free-response questions
  • Covers kinematic equations and their applications in physics
  • Provides detailed solutions to enhance understanding of motion concepts
  • Designed for AP Physics students preparing for the exam
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1.
Show all your work for each part of the question. The parts within the question may not have equal weight.
A dart is launched horizontally from a platform at height . The dart hits the center of a target a horizontal
distance away from the initial launch point, as shown in Figure .
(a)
i. The dart lands on the target at time . On the following axes, a graph of the vertical velocitysketch
and the horizontal velocity of the dart as a function of time from the time the dart leaves the platform until
it hits the target. Take the upward direction as positive.
AP PHYSICS 1 Scoring Guide
Unit 1 Progress Check: FRQ
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AP PHYSICS 1 Unit 1 Progress Check: FRQ Solutions and Scoring Guide
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ii. Starting with a kinematic relationship, an expression for the launch velocity needed for the dart toderive
hit the center of the target. Express your answer in terms of , , and physical constants, as appropriate.
(b) The height of the platform is then increased, but the target is not moved. whether the launch velocityIndicate
should be increased, decreased, or should remain constant for the dart to still hit the center of the target? Justify
your claim.
Part A
Select a point value to view scoring criteria, solutions, and/or examples and to score the response.
0 1 2 3 4 5 6 7
The response accurately includes the following criteriaall
1 point is earned for a graph of horizontal velocity as a function of time that is horizontal.
1 point is earned for a graph of vertical velocity with negative slope starting at the origin.
Example Response
Scoring Guide
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Scoring Note: A graph of either velocity as a function of time that is flipped over the horizontal axis will
also earn these points.
1 point is earned for a multi-step derivation starting with an appropriate kinematic equation relating
position and time.
OR
Scoring Note: Other kinematic equations can also be used to earn this point.
1 point is earned for appropriately separating values related to horizontal and vertical motion.
1 point is earned for of the following substitutions into a kinematic equationONE
◦ An initial vertical velocity of zero
◦ for the vertical acceleration of the dart
◦ for the initial height of the dart
◦ for the final height of the dart
1 point is earned for a correct expression for the time the dart takes to land.
1 point is earned for an expression for the horizontal speed of the dart required to hit the target consistent
with the time derived for the dart to land on the ground.
Example Response:
Scoring Guide
Unit 1 Progress Check: FRQ
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AP PHYSICS 1 Unit 1 Progress Check: FRQ Solutions and Scoring Guide
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Faqs of AP Physics 1 Unit 1 Progress Check FRQ Solutions Guide
What types of problems are included in the AP Physics 1 FRQ solutions?
The AP Physics 1 FRQ solutions include a variety of problems related to motion, such as projectile motion, kinematics, and the relationships between velocity and acceleration. Each problem is designed to test students' understanding of fundamental physics concepts and their ability to apply kinematic equations. The solutions provide step-by-step explanations, helping students grasp the underlying principles and improve their problem-solving skills.
How does the scoring guide help students prepare for the AP Physics exam?
The scoring guide offers insights into how free-response questions are evaluated, detailing the criteria used to award points. By understanding the scoring system, students can focus their study efforts on areas that are most likely to be tested. The guide also emphasizes the importance of clear reasoning and logical presentation in responses, which are critical skills for success on the AP exam.
What is the significance of kinematic equations in AP Physics 1?
Kinematic equations are fundamental tools in AP Physics 1 that describe the motion of objects. They allow students to calculate various parameters such as displacement, velocity, and acceleration under constant acceleration conditions. Mastery of these equations is crucial for solving problems related to motion, as they form the basis for understanding more complex concepts in physics.
How can students effectively use the solutions guide for exam preparation?
Students can use the solutions guide by reviewing each problem and solution to identify common themes and problem-solving strategies. Practicing similar problems and comparing their solutions to the guide can enhance their understanding and retention of key concepts. Additionally, focusing on the scoring criteria helps students learn how to articulate their reasoning clearly, which is essential for achieving high scores on the exam.