Light is faster than Usain Bolt because light travels at a speed of approximately 299,792,458 meters per second, while Usain Bolt's top speed is around 37 kilometers per hour. Light is emitted by tiny particles called photons, which are packets of energy. Light travels at all directions because it can be emitted, absorbed, and reflected in various directions. Light reflects when it encounters a surface and bounces off in a different direction.