Physics@Brock

Physics Department

PHYS 1P21/91

Homework

WeBWorK

Textbook

PPLATO

iOLab online

Formula Sheet

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Weekly Homework and Quizzes

Homework assignments are delivered through WeBWork. Questions cover the material assigned during the lectures of the preceding 2 weeks.

The weekly test for the first two weeks ( dates: Jan 17 & Jan 24) will be done through WeBWork. The weekly test is a 50-min test. The test will be available on WeBWork for a window of time that will be determined by the course instructor. However, note that Once you start the test, you only have 50 minutes to finish and submit your answers.
Important Instructions to complete the weekly WeBWork test.

Unless the text of the problem explicitly asks for sig figs, assume that the default precision WW requires to accept a numerical answer as correct is to be within a relative tolerance of 0.005, or 0.5% of the value. Typically, this translates into about four sig figs.

A stratigy for improving your Quiz performance ( Practice Makes Perfect!):

Solve the follow-up questions and problems at the end of the section. Working on solving various problems makes you develope the ability to plan out a solution for any problem within a reasonable timeframe. In addition to developping other skills such as sketching a quick scenario and identifying the correct formula to use. The link below contains the answers for odd-numbered problems from the textbook. The odd-numbered problems will allow your to make sure, and the even-numbered ones will allow you to test yourself. You must learn to have enough confidence in your skills to solve even those problems where the answer is not known in advance. Both are integral to the learning process. Answer Key - Openstax Collage Physics

Lecture Timetable

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Week # PPLATO Lectures and Textbook Sections Comments

Week 1 Jan10-16 Module Math 1.2 Introduction (1.1), Physical Quantities and Units (1.2), Accuracy, Precision and Significant Figures (1.3), Approximations (1.4).
Week 2 Jan17-23 Introduction to scalars and vectors Describing Motion ( the particle model),Components of Motion: Displacement vs Distance(2.1), Vectors, Scalars and Coordinate System (2.2), Time, Velocity vs Speed (2.3), Graphical analysis in 1D (2.8)
Ex: an interactive vector calculator

Week 3 Jan23-28 PHYS 2.1: Introducing motion Graphical Analysis in 1D Motion (2.8), (x vs t) graph ( Uniform Motion), (v vs t) graph, Acceleration (2.4), Motion with constant acceleration. Deriving Equation of Motion in 1D Using graphical analysis (2.5). Problem-Solving basics for 1D kinematics (2.6), Applying the Kinematic Equation to solve Free Fall Problems ( motion along y-axis) (2.7). Hammer Versus Feather on the Moon

Week 4 Jan31-Feb 04 Math 2.5: Working with vectors Introdution to motion in 2D (3.1). Working with components: Vector Addition and Subtration: Graphical Method (3.2) and Analytical Method (3.3). Relative Motion: Relative velocities in 1D and 2D (3.5).

Week 5 Feb7-11 PHYS 2.2: Projectile MotionPHYS , PHYS 2.3: Forces Projectile Motion (3.4). Introduction to Dynamics. Force Concept (4.1) .Newton's 1st Law (Inertia) (4.2). Newton's 2nd Law (4.3). Newton's 3rd Law (4.4)Problem-Solving Strategy for Newton’s Laws of Motion and Free-body diagram (4.6),spring Force(5.3) Contact Forces: only weight and normal force 4.5 Mass vs Weight

Week 6 Feb14-18 PHYS 2.3: Forces Weight on an Incline: Resolving weight into components Ex.4.5, Contact Forces: Tension, Friction 4.5 Drag Force (4.7) and Thrust TBA

Week 7 Feb21-25 Reading Week (Feb 21 - Feb 25) No Classes
Stories From Physics

Week 8 Feb 28-Mar 04 PHYS 2.3: Forces Ropes and Pulleys . Non-inertial Reference Frame and Fictitious Forces: Apparent Weight Examples(4.8), example (4.9). Introduction to Work and Energy (7.1) Trust in Physics

Week 9 Mar. 07-11 PHYS 2.4: Work and Energy Kinetic Energy and the work (7.2) Gravitational Potential Energy (7.3) , Conservative Forces (7.4) vs Nonconservative Forces (7.5). Conservation of Energy (7.6). Power (7.7) Extra Reading: (7.8), (7.9).

Week 10 Mar. 15-21 PHYS 2.5: Momentum and collisions Elastic Collision in 1D (8.4). Inelastic Collision in 1D (8.5). Collision of point masses in 2D (8.6). Introduction to Uniform Circular Motion( rotation angle and angular velocity) Giant Newton's Cradle! and Stacked Ball Drop

Week 11 Mar. 21-25 PHYS 2.6: Circular Motion Angular position, Angular velocity (6.1) and Centripetal Acceleration (6.2). Centripetal Force (6.3).fictitious forces in non-inertial frame of reference (Rotating frame) (6.4). Newton's Universal Law of Gravity (6.5). Kepler's Laws (6.6). Comments

Week 12 Mar. 28- Apr. 01 PHYS 2.7: Rotational Mechanics, PHYS 2.8:Angular Momentum Angular acceleration (10.1), Tangential acceleration. Kinematics of Rotation (10.2). Torque (9.2), Dynamics of Rotation (10.3).Static and Turque (9.1, 9.2 , (9.3). If all of Earth's ice melted!