The first in my series of puzzles inspired by real physics. Which falls fastest: a weighted cube, a reflection cube, a turret, or you? If it wasn't for air resistance, they would fall at exactly the same rate! (9.80 m/s/s or 32 ft/s/s). Still, even with ai...

The second in my series of puzzles inspired by real physics. Most objects accelerate downward at the same rate whether they have horizontal velocity or not (objects that generate lift - such as an airplane - are exceptions). This makes it easy to set up a ...

The third in my series of puzzles inspired by real physics. Momentum is related to mass and velocity and is conserved during a collision (except when friction gets invovled, greatly complicating things, which is why physics professors accross the world use...