03-뉴튼의 사과
26/09/16 18:13
Chap. 3 뉴튼의 사과
May the Force Be with You
“The F, the m and the a in Newton’s formula are very important concepts in mechanics. The F is force, a push or pull exerted on an object. The m is mass, a measure of how much matter is in an object. And the a is acceleration, which describes how an object’s velocity changes over time. Velocity, which is similar to speed, is the distance an object travels in a certain amount of time.”
-- From http://science.howstuffworks.com/science-vs-myth/everyday-myths/newton-law-of-motion1.htm
Useful Links and Further Reading:
- Newton’s laws of motion (From Wikipedia, the free encyclopedia) - Inside see the MIT Open Courseware (Video Lectures) 6: Newton’s First, Second, and Third Laws: http://en.wikipedia.org/wiki/Newton’s_laws_of_motion
- “Galileo and Einstein” by Michael Fowler (U of Virginia) http://galileoandeinstein.physics.virginia.edu/
- 사과 멀리 날리기 demo: http://galileoandeinstein.physics.virginia.edu/more_stuff/Applets/newt/newtmtn.html
- Speed and Velocity: http://www.physicsclassroom.com/class/1dkin/u1l1d.cfm
- Velocity Vector: http://mathworld.wolfram.com/VelocityVector.html
- Fishing under ice: http://bestofyoutube.com/fishing-under-ice -- Figure out how gravity works here!
- 관성이란 어떻게 생기는 것일까? 관성이 큰 물체와 작은 물체의 차이는 어떻게 생기는 것일까?
- 힘과 가속도의 비례 관계를 어떻게 알 수 있나? 주변에서 뉴튼의 제2법칙을 보이는 경우를 생각해보자.
- 외부에서 힘을 받지 않고 “스스로 움직이는 물체”를 찾아보자. 이런 물체는 뉴튼의 법칙에 위배되는 운동을 하는 것일까?
- 어떤 물체의 상태, 즉, 속도가 변하려면 힘을 받아야 한다. 힘을 주고 받는 방법에 대한 고찰을 해보자.
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