All formulas and analysis of physics in grade three of junior high school
In the mechanical part, 1. Velocity: v = s / T2, gravity: g = mg3, density: ρ = m / V4, pressure: P = f / S5, liquid pressure: P = ρ gh6, buoyancy: F floating = f '- f (pressure difference) f floating = G-F (apparent gravity) f floating = g (floating, suspension) 7. Archimedes principle: F floating = g row = ρ