Quantitative know-how was then demonstrated. I did find it relieving to read that qualitative ideas are preferable to quantitative tools in the study of physics. The theorems bore me, as I suppose anyone who is not majoring in sciences. I do, however, enjoy the qualitative descriptions of how things work and come about working. Galileo's law of falling was nicely demonstrated by the ball falling a long distance.
Proportions help better understand freefall.
It is one of science's oldest question's, and it is the focus of this chapter. A wave is a disturbance that travels through a medium, and that transfers energy without transferring matter. Projectile motion is an actual transfer of matter. Wave motion is different from projectile motion. The wavelength of a continuous, repeated wave is the distance from any point along the wave to the next similar point, from crest to crest or from trough to trough.