TEST 2 Study guide (F-2024)

Test Overview

Course: HK263 Study Guide for Test 2 (Fall 2024)

Tests Covered:

  • Test 1: Sections 1 and 2

  • Sections 3 and 4

Materials:

  • Review all sections thoroughly in preparation for Test 2; ensure you revisit the Test 1 Study Guide for a comprehensive understanding of foundational concepts.

Format:

  • The format of Test 2 will closely resemble that of Test 1, along with quizzes covering content from Sections 1-4. Expect a mix of multiple-choice, short answer, and problem-solving questions that will test your understanding and application of key concepts.

Key Topics by Section

Section 3: Linear Kinematics, Projectile Motion, and Angular Kinematics

  • Kinematics:

    • Understand the definition of kinematics and its importance in biomechanics, focusing on the study of motion without considering the forces involved.

    • Familiarize yourself with the six key concepts: distance, displacement, speed, velocity, acceleration, and time.

  • Laboratory Kinematic Concepts:

    • Be familiar with experimental techniques for measuring kinematic parameters and understanding motion analysis in laboratory settings.

  • Stick Figures:

    • Know the qualitative information conveyed by stick figures in motion analysis, distinguishing between kinematic states (motion described by kinematics) and kinetic states (forces acting on the object).

  • Velocity in Circular Motion:

    • Determine where the highest linear and angular velocities occur within a circular path (e.g., comparing Point A vs Point B).

  • Vector and Scalar Quantities:

    • Complete the following table with typical SI units and definitions to differentiate scalar and vector quantities:

      • Distance: Scalar (m)

      • Displacement: Vector (m)

      • Speed: Scalar (m/s)

      • Velocity: Vector (m/s)

      • Acceleration: Vector (m/s²)

      • Angular Distance: Scalar (rad)

      • Angular Displacement: Vector (rad)

      • Angular Speed: Scalar (rad/s)

      • Axis of Rotation: Vector (direction)

Section 4: Acceleration and Motion

  • Negative Acceleration:

    • Understand the implications of negative acceleration: it may signify either acceleration in the opposite direction or deceleration. Explore nuanced explanations for both negative and positive acceleration scenarios.

  • Ball Motion Analysis:

    • Analyze the motion of a ball thrown upwards, dividing it into phases A (upward motion) and B (downward motion), and assess displacement, velocity, and acceleration in both phases comprehensively.

  • Graphical Analysis:

    • Identify velocity at the peak of displacement (whether it is positive, negative, or zero), and describe changes in displacement when velocity is at its peak, as well as the significance of zero crossing and inflection points in graphical representations.

    • Identify peak values on a time series graph and discuss implications on motion.

  • Comparing Velocities:

    • Determine which of the two given velocities is greater: 118 m/s or -150 m/s, emphasizing the importance of direction in vector quantities.

  • Projectile Motion Factors:

    • Identify three main factors that affect the trajectory of a projectile: initial velocity, angle of projection, and height of release.

    • Understand which factor primarily governs the shape and size of the projectile’s trajectory, and discuss optimal projection angles and their implications on athletic performance, particularly in sports like long jump.

  • Constant Acceleration Equations:

    • Discuss the purpose and utility of constant acceleration equations, along with their definitions in the context of both vertical and horizontal acceleration.

  • Projectile Path and Modification:

    • Explore various aspects of the airborne system that affect trajectory and the limitations of making adjustments mid-air.

  • Body Positioning:

    • Describe how changes in shoulder or arm positioning can impact overall jump height and range, discussing biomechanics principles that influence these movements.

Force, Moment Arms, and Free Body Diagrams

  • Force Representation:

    • Define force equations, their respective units, differences between weight force and acceleration due to gravity, and the distinction between mass and weight.

  • Free Body Diagrams (FBDs):

    • Identify static systems and missing components in FBDs, noting the significance of visualizing forces to better understand the dynamics involved in various movements.

    • Recognize vertical and parallel forces at play in a given scenario, and their implications on motion.

  • Moment of Force:

    • Know the units used for moment of force, typically Newton-meters (Nm), and understand their relationship to physical activities, especially in resistance training.

    • Illustrate and calculate moment arms for various muscle groups, shown graphically in diagrams, relating to leverage and mechanical advantage in movement.

  • Calculations and Evaluations:

    • Practice calculating moments of force and determining varying difficulty levels based on the lengths of moment arms involved.

Projectile Motion Analysis

  • Projectile Path Drawing:

    • Draw paths for various projection angles (e.g., 90, 75, 60, 45 degrees, etc.) and analyze which angle yields the maximum height versus the maximum range.

  • Jump Height Analysis:

    • Conduct a detailed analysis of jump projections concerning competing aspects of height versus range considerations, emphasizing their relevance in sports performance.

  • Kinematics vs. Kinetics Concept Table:

    • Categorize terms thoroughly into kinematic or kinetic attributes, highlighting key properties and forces associated with each, facilitating a deeper understanding of both concepts.