Physics of the Universe

Physics of the Universe starts with motion: how position, velocity, and acceleration describe the world, how forces explain it, and how momentum and energy keep the books in a collision. You practice against the physics itself, drawing free-body diagrams, reading and sketching motion graphs, and working collision problems the course grades step by step. The mathematics stays at the algebra 1 level, and every quantitative tool is taught before it is used.

Later units will follow the California storyline outward: gravity and electric forces acting at a distance, circuits and the power grid, nuclear processes read as clocks for Earth's history, seismic waves used as messengers from Earth's interior, and stars, redshift, and the evidence for the Big Bang. Readings stand alone, most problems carry hints, and practice deals randomized questions from skill pools until each idea holds.