Have fun listening this force mass and acceleration clip! Here is some out of the lot:

Newton's second law states that force equals mass times acceleration (F=ma). To calculate mass, rearrange the formula as mass equals force divided by acceleration (m=F/a). To calculate acceleration, rearrange the formula as acceleration equals force divided by mass (a=F/m).

Human beings are anatomically similar and related to the great apes but are distinguished by a more highly developed brain and a resultant capacity for articulate speech and abstract reasoning. In addition, human beings display a marked erectness of body carriage that frees the hands for use as manipulative members. Thanks a lot.

Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids. The Solar System is the gravitationally bound system of the Sun and the objects that orbit it. The Solar System formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud