AST101H5 Chapter Notes - Chapter 4: Scale Of Temperature, Dwarf Planet, Net Force
Document Summary
Example: a mass of 50 kg on earth, where the acceleration of gravity is about. 10 m/s2, has a weight of 50 kg 10 m/s2 = 500 newtons. Because changing momentum is usually a changing velocity = acceleration, this is usually written f = ma: 3rd law: forces come in equal but opposite pairs, force = reaction force continued on page 2. Chapter 4 summary page 3 of 4: forms of energy, motion = kinetic energy. Motion of atoms within an object = heat. Example: the moon and earth both receive the same amount of solar heating, but the moon"s smaller mass makes its gravity too weak to hold an atmosphere, while. Earth"s larger mass makes it easy to hold onto its atmosphere. continued on page 4. Cosmic calculation - mass of the dwarf planet eris. The mass of the dwarf planet eris is calculated using newton"s version of kepler"s 3rd law of planetary motion.
