See Part 1, where I used conservation of energy of a projectile to determine the formula for kinetic energy, *K*=½*mv*². The aim was to see if I could derive a more intuitive understanding of this formula — especially why it depends on the square of the velocity. With a constant force and therefore constant acceleration, velocity increases linearly, by the same amount per second, so why does kinetic energy increase at increasingly large rates? (I should specify that I am using the nonrelativistic formula, so we assume speeds much lower than the speed of light.)

**Problem:**Can I understand the kinetic energy formula,

*K*=½

*mv*², in a more intuitive manner?

Continue reading “Kinetic Energy and Conservation of Energy, Part 2”