By the end of this unit, a successful student will be able to:
MSTE Phys 1.4: Interpret and apply Newton's three laws of motion.
NGSS HS-PS2-1: Analyze data to support the claim that Newton’s second law of motion describes the relationship among the net force on a macroscopic object, its mass, and its acceleration.
MSTE Phys 1.5: Use a free-body force diagram to show forces acting on a system consisting of a pair of interacting objects. For a diagram with only co-linear forces, determine the net force acting on a system and between the objects.
MSTE Phys 1.6: Distinguish qualitatively between static and kinetic friction, and describe their effects on the motion of objects
All assignments are due on the date listed. That is not the date they are assigned.
Due date Day Assignment
10/7 Wed Read: 4.1-4.5
Ungraded Practice: Do end of chapter 4 questions: 1-7; 9, 10, 11, 12
Graded Practice: Do end of chapter 4 questions: 8, 11 (PS 7) (Goal 1)
10/8 Thu Read: 4.6-4.9
Ungraded Practice: Do end of chapter 4 questions: 15, 17-20
Graded Practice: Do end of chapter 4 questions: 14, 16 (PS 8) (Goals 1, 4)
10/9 Fri Read: Ch 5 (all)
Ungraded Practice 2, 6, 8, 10, 12, 14, 16
Graded Practice: 4, 18 (PS 9) (Goals 1,2,3,4)
10/14 Wed Read: Ch 6 (all)
Ungraded Practice: 2, 4, 8, 10, 12, 16, 18
Graded Practice: 6, 14 (PS 10) (Goal 1)
10/15 Thu Ungraded Practice: Do Concept Development Practice Pages: 4-1, 4-2
Graded Practice: Do Chapter 4: 38, 39 (PS 11)
10/16 Fri Ungraded Practice: Do CDPP: 5-1, Chapter 5: 40
Graded Practice Do: Chapter 5: 38, 42 (PS 12)
10/19 Mon Ungraded Practice: Do CDPP 5-2; Chapter 5: 36
Graded Practice: Chapter 5: 43, 44 (Goals 1, 2, 3, 4)
10/20 Tue Ungraded Practice: Do CDPP 6-1; Chapter 6: 34
Graded Practice: Do Chapter 6: 32, 37 (Goals 1, 2, 3, 4)
10/21 Wed Finish Car and Ramp force lab (B-6 Force, Mass, and Acceleration) (Lab 4)
(Goals 1, 2, 3)
10/22 Thu Test – Forces (Goals 1, 2, 3, 4)
Missed a class? Forgot what we did last week? Follow the link to Physics Unit 2 Daily Plans
Textbook links
Links - Dynamics
Prentice Hall's web page on Giancoli Chapter 4 Forces.
Suggesting that there might be a law of conservation of great physicists, Isaac Newton was born in the year Galileo died. Newton (1642-1713) assembled the basis of much of classical mechanics in his Mathematical Principles of Natural Philosophy (1687) other copies can be found here and here and here wherein he decribes the relationships between forces, mass and acceleration as well as describes the nature of the force of univeral gravitation. All of these are English translations of the original Latin Principia. Newton was notorious for developing his briliant ideas about mathematics and physics and then not publishing them until much later. Many of the concepts embeded in the Principia were developed by Newton while away from Cambridge during the plague years of 1665-1666. His reticence to publish earlier helped lead to a number of conflicts concerning priority between Newton and his contemporaries such as Leibnitz, Hooke, and Huygens.
In this video, Katie pulls a shirt out from under a small stack of textbooks. The resistance of the books to acceleration is their mass. It demonstrates the first of Newton's Laws, the inertia law. However, the friction of the shirt on the books does exert some force on them, and while it is still in contact with them, accelerates them from rest. When only the table is in contact with them, it too exerts a force of friction upon them accelerating them back to rest. While at rest the force of gravity from the Earth pulling downward on the books still acts on them, but it is balanced by the normal force from the table, the repulsion of the like charged electrons from both surfaces, affecting them on a larger scale. Since those two forces add together as vectors to equal zero total force, the book remains at rest. Katie's book inertia demo
In this video I demonstrate the same effect as in Katie's book inertia demo above, but with more books and a swifter pull - and we forgot to turn on the microphone, so it's silent. Siren: Book Inertia Demo - no sound.
PSSC Physics video: A Million to One When friction is reduced (with a C02 cushion) a flea can tug a mass about a million times its own.
The Mechanical Universe 11: Gravity, Electricity, & Magnetism
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You may be interested in The Cartoon Guide to Physics by Larry Gonnick and Art Huffman.
Cosmos by Carl Sagan
Quicksilver by Neal Stephenson (historical science fiction set around the time of Isaac Newton)