NATS 1945 Lecture Notes - Lecture 3: Video Lesson, Gravitational Energy, Kinetic Energy
30 Nov 2017
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Assigned reading: muller (2010), energy and power and the physics of explosions (pp. 1-32). To prepare for the quiz on this lesson, answer the questions below. Most of the answers can be found in the lecture videos, the rest from your textbook. Chemical energy is transferred to do work and generate heat: g(cid:396)a(cid:448)itatio(cid:374)al e(cid:374)e(cid:396)g(cid:455): (cid:272)o(cid:373)es f(cid:396)o(cid:373) ea(cid:396)th"s mass. Suppose you hear that there are 2 asteroids headed toward earth. Asteroid a is twice as heavy as asteroid b, but asteroid b is twice as fast. Use this to explain why an object speeds up as it falls toward the earth: the total amount of energy remains constant with time, state the 3 common units of energy defined in the lecture video. What is power? (very brief definition is fine). Rank them in order of energy yield per gram of fuel, from highest to lowest (natural gas oil coal).
