ASTR 2010 Lecture Notes - Lecture 4: Net Force
Document Summary
Ch 10: sun the sun is more than 100 times larger than the earth. Moon"s diameter is 0. 27 of the earth. Parallax: shift in a star"s apparent position resulting from the earth"s motion around the. The sun"s light travels in parallel rays. Inertia: tendency of a body at rest to remain at rest and a body of motion to keep moving in a straight line at a constant speed. The amount of inertia describes how strongly an object wants to remain at rest or. Inertia is measured by an object"s mass straight line at a constant speed, unless made to change that state by forces acting on it. Inertia causes an object to resist changes in either speed or direction. Mass: amount of matter an object contains. Newton"s 1st law of motion: a body continues in a state of rest, or in uniform motion in a.
