ASTR 1101 Lecture : Astro NOTES
Document Summary
Newton"s universal law of gravity and three laws of motions. Invented the reflecting telescope: developed universal law of gravity and three laws of motion. Invented calculus: first law- objects at rest will remain at rest and objects in motions will stay in motion unless acted upon by an outside force. (ex. Voting card questions: what causes us to stand on the surface of earth rather than float out into space, magic, gravity correct, earth"s atmosphere. Newton"s law of gravity- every object attracts every other object with a force that is proporational to the product of their masses and inversely proportional to the square of the distance between them. Gravitional force formula- fgrav=gxm1xm2/r^2 (r is replaceable with a) Doubling the mass of one object doubles the force result. Doubling the distance will divide the force result by 4. *escape velocity= amount of velocity needed to escape the gravity of another mass.
