ASTR 114 Lecture Notes - Lecture 2: Angular Momentum, Refraction, Net Force
11 Jan 2020
School
Department
Course
Professor
Document Summary
Peed: rate at which object moves/velocity: speed and direction/acceleration: any change in velocity units of speed/time. All falling objects accelerate at the same rate. Mass the amount of matter in an object/weight the force that acts upon an object. Newton"s first law of motion: an object moves at constant velocity unless a net force acts to change its speed or direction. Newton"s second law of motion: force = mass x acceleration. Newton"s third law of motion: for every force, there is always an equal and opposite reaction force. Objects continue at constant velocity because of conservation if momentum. Angular momentum = mass x velocity x radius. Attraction is directly proportional to the product of their masses. Attraction is inversely proportional to the square of the distance between their centers. We can measure the flow of energy in light in units of watts: 1 watt = 1 joule/s. Wavelength is the distance between two wave peaks.
