Lecture 9 – Motion and Gravity, Part 1/2
Summary / Checklist of the Main Concepts to Understand and Remember
Newton's Laws of Motion | ||
• | What is inertia? | |
• | According to Aristotle, what does it take for an object to keep moving at a constant speed in a given direction? | |
• | According to Newton's laws, what does it take for an object to keep moving at a constant speed in a given direction? | |
What do Newton's laws say about the motion of an object on which no net force is acting? | ||
What is mass, and how does it differ from weight? | ||
Can an object have no mass, or no weight? (If yes, explain when; If no, explain why.) | ||
• | What do Newton's laws say about the motion of an object on which a net force is acting? | |
• | What do Newton's laws say about two objects when they interact, and one of them feels a force due to the other one? | |
• | Is the force acting on an object directly related to how fast that object is moving? | |
• | Does a satellite in orbit around the Earth hundreds of miles above the surface need a force to push it along the orbit? | |
The Sky in September | ||
• | The Summer Triangle: The three stars that form it, and their constellations. | |
Topics from the lecture page and textbook not listed above [or between square brackets]
were not covered in class;
Underlined words indicate that I will expect students to remember a number or a name related to that topic.
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