2019B F=ma EXAM P23--Train Over Bumpy Track: How High Is Too High?
2019B F=ma EXAM P22--Apple Bruise Test: How Much Pressure to Cause Damage?
2019B F=ma EXAM P21--Freight Car and Falling Grain: Calculating the Normal Force!
2019B F=ma EXAM P20--Up the Ramp, Down the Ramp: How Do Times Compare?
2019B F=ma EXAM P19--Pendulum Acceleration: What’s the Real Curve?
2019B F=ma EXAM P18--Race Car Timing: Which Uncertainty Matters Most?
2019B F=ma EXAM P17--Disk vs. Hoop: Will It Return Home Too?
2019B F=ma EXAM P16--Rolling Hoop: How Long Till It Comes Back?
2019B F=ma EXAM P15--Air Resistance in a Swing: How Strong Is the Drag?
2019B F=ma EXAM P14--Elastic Wall Bounce: Find the Launch Speed!
2019B F=ma EXAM P13--Water Hose vs. Wall: What’s the New Splash Zone?
2019B F=ma Exam P12--Planets Orbiting: Who Has More Energy and Momentum?
2019B F=ma Exam P11-Cutting out a Circle:Moment of inertia Puzzle
2019B F=ma Exam P10--Cart and Bowl: How Fast Does the Cart Go?
2019B F=ma Exam P9--Board and Ball: How Much Force Keeps It Up?
2019B F=ma Exam P8--Hand-Pressed Scale: What Does It Read?
2019B F=ma Exam P7--Floating Boat in Trough: Which Wire Bears the Load?
2019B F=ma Exam P6--Spinning Dust Cylinder: How Density Changes with Radius
2019B F=ma Exam P5--Earth’s Gravity: What Does the Curve Look Like?
2019B F=ma Exam P4--Colliding Masses: Gravitational Race!
2019B F=ma Exam P3--Series Springs: Whose Energy Wins?
2019B F=ma Exam P2--Floating Blocks: Can You Guess the Densities?
2019B F=ma Exam P1--Friction on the Ramp: How Much Energy Disappears?
2020 AMC 12B P25 SOL2 – The Final Boss (Elegant Finish)
2020 AMC 12B P25 SOL1– The Final Boss. Can You Beat It? (Full Solution)
2020 AMC 12B P24 SOL2--Expert’s Trick
2020 AMC 12B P24 – 3 Concepts, 1 Problem, Zero Room for Error
2020 AMC 12B P23 – Think You’re Good? Try This One
2020 AMC 12B P22 SOL2-The Most Elegant Problem (Creative Approach)
2020 AMC 12B P22 – The Most Elegant Problem of the Set (Standard Solution)