ASTR 101 Lecture Notes - Lecture 15: Ellipse, Gravity Assist

• School: Queen's University
• Department: Physics, Engineering Physics and Astronomy
• Course: ASTR 101
• Professor: David Alan Hanes

Document Summary

Lecture 15 - newton on acceleration, black holes, and gravitational. Acceleration: any change in state of motion of an object; includes speeding up, slowing down or change in motion. If an unbalanced force acts on a body, it will accelerate (state of motion will change) Depends on size of force and mass of object. Sun will become bigger but will not become more massive; it will remain the same mass. F = ma or a = f/m. Larger force with given mass = more acceleration. Larger mass with given force = less acceleration. Every force (action) is matched by force in same size but in opposite direction (reaction) Van smashing mosquito; two forces are equal but one just has more mass and structure than the other. Notes that everything moves; by pushing a car, you move the earth back, but only by microscopic levels since the earth is so large.