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Fast Physics - Quick Lessons in Under 60s
Motion in a Straight Line
What is Gravitational Acceleration (0:57)
Velocity & Acceleration at the Top (motion under gravity) (0:40)
Can Positive Acceleration Reduce Velocity? (0:54)
Distance Vs. Displacement: 6 Key Differences (0:53)
Velocity Vs. Speed: Key Differences (0:44)
Instantaneous Velocity (0:56)
Direction of Acceleration (0:52)
What does Positive Acceleration Mean (0:51)
Is Minus 25 m/s > 0 m/s (0:58)
Kinematics: Decoding Flat Lines on x-t vs. v-t Graphs (0:59)
Velocity Time Graph and Position Time Graph (0:59)
Integration Visualized
Frames of Reference and Relative Velocity (0:57)
Reference Frames in Kinematics (0:59)
Normal Force vs Weight: Why Fₙ ≠ mg (0:59)
Vectors in Physics: Concept Busters in < 60 sec
Unlock Your Full Potential in Physics: A Special Message for You!
Dot Product of Two Vectors (and Which Angle to Take) (0:45)
Dot Product of Force and Displacement = Work Done (0:52)
Using Dot Product to Find Work Done When the Force is at an Angle to Displacement (0:58)
How to Find the Correct Direction of Cross Product of Two Vectors (0:59)
Parallelogram Law of Cross Product of Two Vectors (0:59)
How to Find Torque Using Cross Product (0:47)
Which Angle to Use While Finding Cross Product of Two Vectors (0:31)
The Vector Gangsters! (& The Right Hand Rules!) (0:12)
Motion in Two Dimensions
Components of Acceleration - Parallel to Velocity and Perpendicular to Velocity (0:55)
Average Velocity Between Two Points Using Vectors (0:56)
Projectile Motion - Bullet and the Monkey (0:39)
What is Position Vector? (0:46)
What is Reference Frame in Physics (0:58)
When is Instantaneous Velocity = Average Velocity (0:57)
Velocity Vector and its Components (0:58)
Projectile Motion and Time of Horizontal Flight (0:57)
Projectile Motion at Complementary Angles (0:52)
Range in Projectile Motion (0:43)
Three Conditions for Circular Motion to Happen (0:28)
Concept Demonstrated: Centripetal Force Using a Spinning Ball and a String (0:11)
Newton's Laws of Motion
Newton's First Law of Motion: The Law of Inertia (0:54)
Newton's First Law of Motion: Law of Inertia (Example II) (0:48)
Newton's First Law of Motion: The Law of Inertia (Example III) (0:51)
Newton's Second Law of Motion: Understanding F = ma (0:45)
How to Use F = ma: Direction of Forces and Components (0:54)
How to Use Newton's Second Law of Motion Equation F = ma (0:36)
Decoding the Dynamics: Mass, Force, and Acceleration (0:29)
Sliding Book: Exploring Friction and Motion Dynamics (0:38)
Unraveling the Mysteries of Tension Force (0:58)
Mastering Free Body Diagrams: Avoiding Common Pitfalls (0:28)
Understanding Acceleration in Connected Systems (0:30)
Determining Tension in a Three-Body System (0:57)
Mastering Free Body Diagrams: Marking Forces Accurately (0:46)
How to Calculate Apparent Weight in an Elevator at Constant Velocity (0:47)
Unlocking Newton's Third Law: Understanding Action and Reaction Forces (0:59)
Newton's 3rd Law Pairs: They Always Act on Different Bodies (0:26)
Does the Earth Move when an Apple Falls? (0:55)
The Dynamics of Drag Force and Terminal Velocity (0:12)
The Art of Minimizing Drag in Skiing (0:26)
The Journey to Terminal Velocity (0:36)
How Centripetal Force Curves Motion (0:58)
Navigating the Curves: The Physics of Centripetal Force and Circular Motion (0:58)
The Art of Vertical Circular Motion (0:59)
Weight of 1 Kg Mass, 2000 KM Above the Earth (0:25)
Visualizing mgSinθ (0:37)
Newton's 1st Law: Rest is Best (0:10)
Newton's 1st Law in Nature (Courtesy @explaining.astrophysics) (0:28)
Inertia vs. Momentum: Why Speed Doesn't Matter for Inertia (0:56)
Newton's First Law of Motion: Why Constant Velocity Means Zero Net Force (Even When Moving) (0:52)
Why Zero Net Force Doesn't Mean Zero Speed — Newton's Second Law | AP Physics 1 (0:59)
Why a Scale Reads Zero in Free Fall: Apparent Weight vs. True Weight (0:52)
Understanding Terminal Velocity: Why Zero Acceleration Doesn't Mean Zero Speed (1:00)
Why a Banked Curve Only Works at One Speed — v = √(gR·tanθ) (0:58)
Conical vs. Simple Pendulum: Why the Circle Always Wins
Hooke's Law: Change in Length, Not the Length (0:59)
Static and Dynamic (Kinetic) Friction
Forces at Play: Understanding Static Friction (0:56)
The ANT 🐜 and The Coefficient of Static Friction Experiment (0:07)
Determining the Coefficient of Static Friction (0:56)
Heavy vs Light Block: Which Slips First? (0:59)
Why Is the Coefficient of Static Friction μₛ = tan θ? (0:52)
Gravitation
Does Earth Move When an Apple Falls? (0:59)
Oscillations and Simple Harmonic Motion (SHM)
Visual SHM Tutorial: Turning Oscillations into a Sine Wave (1:00)
Phase Angle in SHM — The Most Misunderstood Concept (0:59)
SHM Graphs : Visualizing Displacement, Velocity, and Acceleration (2:36)
Simple Harmonic Motion : Why the Mass Doesn't Stop at Equilibrium (2:52)
Simple Pendulum Derivation : Proving the Small Angle Approximation (0:57)
SHM Equations : When to use Sine vs Cosine (0:59)
Period of a Pendulum : Does Gravity Control Time? (1:00)
Angular Frequency : Why we use Circles for Linear Motion (0:59)
Damped Harmonic Motion : SHM with Friction and the Envelope Trick (0:59)
Damped Frequency : Why Friction Makes Oscillations Slower (0:59)
Damped Oscillations : Underdamped vs Overdamped vs Critical Damping (0:59)
Deriving Wave Speed via Newton’s Second Law: Why v = √(t/μ) Excludes Frequency (0:55)
The Physics of Guitar Tuning: Mastering Wave Speed vs. Linear Density (0:54)
Waves
The Atomic "Tug-of-War": Deriving Wave Propagation via Newton’s 3rd Law (1:00)
Work Power and Energy
Equal Force, Unequal Mass: Can Two Iceboats Share the Same Kinetic Energy? (0:54)
Positive, Zero or Negative Work? It's All in the Angle (0:57)
The Work-Energy Theorem in Action (0:20)
Work-energy theorem - Why the Soft Catch Never Stings (0:59)
Why No Work is Done When Motion and Force are Perpendicular (0:48)
Spring Force: Exploring Work Done by Variable Forces (0:10)
Work Done by a Spring: Why the Second Metre Costs 3× the Work (0:59)
Power in Vertical Circular Motion: Is it Positive, Negative or Zero (0:53)
Friction: Why It's a Non-Conservative Force? (0:53)
Conservative Forces are Path Independent (0:37)
How to Determine if a Force is Conservative (0:56)
Understanding Zero Work by Conservative Forces in Closed Paths (0:29)
Non Conservative Forces: Exploring the Role of Friction and Drag in Physics (0:49)
Gravity Simplified: Understanding Work and Energy Conservation with Conservative Forces (0:52)
Can Non-Conservative Forces Increase Mechanical Energy? (0:36)
Understanding Energy Transformation: Work, Potential Energy, and Kinetic Energy (0:58)
Can a Force Increase Kinetic Energy, Yet do No Work (0:54)
Center of Mass, Linear Momentum and Rotation
The Secrets of Center of Mass: How Symmetry Simplifies Physics (0:50)
Momentum vs. Kinetic Energy: Which Ball is Easier to Catch? (0:58)
Force and Impulse: Exploring the Area Under the Curve (0:31)
Comparing Momentum: Which Iceboat Finishes with Greater Momentum? (0:57)
Which Ball is Easier to Catch (0:58)
Area Under Force Time Graph (Impulse and Momentum) (0:31)
Momentum and Impulse of Two Boats (0:57)
Does Acceleration of a Rocket Change? (0:49)
Does the Rocket Push Against Earth During Upward Thrust (0:44)
Mastering Angular Position: Revolution and Radians Explained (0:39)
Understanding Rotational Inertia: Why Some Rotations Are Harder Than Others (0:49)
How to Use the Parallel Axis Theorem (0:58)
The Science Behind Door Handles: How Torque Makes Opening Easier (0:58)
What Causes Rolling Friction? Surface Deformation & the Torque It Creates (0:55)
Rolling Down an Incline: How Moment of Inertia Determines Speed (1:00)
Electricity
Why is the Current in Resistors in Series the Same? (1:22)
Gravitation
Why is Gravitational Potential Energy Negative? (1:00)
What Is the Gravitational Force Between Two People? | Surprising Physics (0:31)
Why Satellite Speed Doesn’t Depend on Mass | Orbital Velocity & Weightlessness Explained (0:57)
Newton's Third Law in Gravity: Why the Apple and Earth Pull with Equal Force (0:59)
Can You Block Gravity? Understanding Gravitational Superposition and Net Force (0:58)
Why Heavy and Light Objects Fall at the Same Rate: Inertia and Gravity Explained (0:45)
Gravitational Potential Energy (U = -GMm/r): Why 'r' is Not Altitude (0:58)
Why is Gravitational Potential Energy Negative? (U = -GMm/r) (1:00)
Why Rockets Throw Themselves Away (0:45)
Fluid Mechanics
U-Tube Fluid Problem: Calculate Unknown Oil Density (1:54)
Buoyant Force vs Gravitational force and The Reason Things Float (0:34)
Archimedes Principle Across the Worlds (0:40)
What are Streamlines in Bernoulli's Principle (0:58)
Work Done by a Spring: Why the Second Metre Costs 3× the Work
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