牛顿及三大定律【英文】Sir Isaac Newton & The Three Laws of

The Three Laws of Motion
• Law #1: Law of Inertia
• Law #2: F = m x a • Law #3: Action/Reaction
Law #1: Law of Inertia
• An object at rest will remain at rest unless acted on by an unbalanced force. • An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
• Newton had new ideas about motion, which he called his three laws of motion.
• He also had ideas about gravity, the diffraction of light, and forces. *Learn More*
– This law is often called "the law of inertia".
*Learn More*
Law #2: F = m x a
• Acceleration is produced when a force acts on a mass. • The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
– Practice Quiz
Time To Experiment
• Directions:
– Get in to groups of 3 or 4 – Test the three laws with the materials provided. – Open “Time to Experiment” Word Document on the website. Fill in appropriately. – Create an excel sheet for each experiment.
*Learn More*
Law #2: F = m x a
• The Second Law gives us an exact relationship between force, mass, and acceleration. It can be expressed as a mathematical equation:
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http://scienceprojectideasforkids.com/http:/scienceprojectideasf orkids.com/tag/newtons-laws-of-motion/
http://csep10.phys.utk.edu/astr161/lect/history/newton3laws.html
•F = m x a
– FORCE = MASS x ACCELERATION
Law #3: Action/Reaction
• For every action there is an equal and opposite re-action.
*Learn More*
Quiz Time!!
• Test your knowledge
Excel Sheet Directions
• What to include:
– The law being tested
– Results for at least 3 Trials – After you have entered you data copy/paste your table into the “Time to EBiblioteka Baiduperiment” Word Document.
Newton’s Education
• He attended Free Grammar School
• Then went on to Trinity College Cambridge
• Newton received both a bachelors and masters degree
Newton’s Ideas
Test Your Knowledge
• Take Test
– When you finish the quiz print it out and turn it in.
References
• • • http://science.discovery.com/interactives/literacy/newton/newton.html http://teachertech.rice.edu/Participants/louviere/Newton/newton.html http://www.softschools.com/quizzes/science/newtons_laws/quiz384.html
Sir Isaac Newton & The Three Laws of Motion
5th Grade
Sir Isaac Newton
• He was born in England on December 25, 1643. • He lived for 85 years. • Isaac Newton was raised by his grandmother.