Presentation is loading. Please wait.

Presentation is loading. Please wait.

Newton’s 1st Law: Part 2 Physics Ms. Allison.

Published byPhilomena Davidson Modified over 8 years ago

Similar presentations

Presentation on theme: "Newton’s 1st Law: Part 2 Physics Ms. Allison."— Presentation transcript:

1 Newton’s 1st Law: Part 2 Physics Ms. Allison

2 Review Topic weight Facts The force of gravity on an object
WEIGHT IS NOT MASS!!! Weight equals mass times gravity (w = mg) w = weight (N) m = mass (kg) g = gravity (10m/s2) UNITS: Since weight is a force we use Newtons as the units (not pounds)

3 Think Critically Task Explanation Since w = mg
How would your weight compare in outer space to on Earth? How would your mass compare in outer space compared to on Earth? How would your volume compare in outer space compared to on Earth? Explanation You would weigh less in outer space because gravity is less in outer space than on Earth Mass remains the same because your inertia is the same in outer space as it is on Earth Volume also remains the same, because you take up the same amount of space on Earth and outer space.

4 What about other outside forces
Topic Friction Facts Is a force that slows/stops motion Depends on surface Grass vs. Ice High Friction Low Friction

5 What about other outside forces
Topic Friction Facts Opposes motion

6 What about other outside forces
Topic Friction Facts FF = µFN FF = friction force (N) µ = (mu) coefficient of friction (No Units) FN = normal force (N) *find FN by finding an objects weight!!

7 FF = µFN Support/Normal Force FN = normal force (N)
Topic Normal Force Facts FF = µFN FN = normal force (N) Normal force is upward force equal to the magnitude of weight. *find FN by finding an objects weight!!

8 Reach for the Stars Based on the equation for friction force, why doesn’t the coefficient of friction have units?

9 Friction Depends on the Surface
Topic The amount of friction depends on the coefficient of friction Facts Larger “µ” means more friction Gravel Snow tires Smaller “µ” means less friction ice

10 Solving for Friction Force
We will use Handout 3-2 Friction to solve for the Friction Force

11 Closing Write a paragraph that correctly includes ALL of the following terms: The Law of Inertia Newton’s 1st Law Friction Inertia Equilibrium Net Force

12 Homework Quiz on Chapter 2- Newton’s 1st Law

Download ppt "Newton’s 1st Law: Part 2 Physics Ms. Allison."

Similar presentations

Principles of Technology Waxahachie High School Resistancein Mechanical Systems PIC Chapter 4.1 Resistancein Mechanical Systems PIC Chapter 4.1 PT TEKS.

Principles of Technology Waxahachie High School Resistancein Mechanical Systems PIC Chapter 4.1 Resistancein Mechanical Systems PIC Chapter 4.1 PT TEKS.
The Law of Inertia. Objects at rest remain at rest unless acted upon by an outside force. Objects in motion will remain in motion unless acted upon by.

The Law of Inertia. Objects at rest remain at rest unless acted upon by an outside force. Objects in motion will remain in motion unless acted upon by.
“ If I have seen farther than others, it is because I have stood on the shoulders of giants.” Sir Isaac Newton (1642 – 1727) Physicist.

“ If I have seen farther than others, it is because I have stood on the shoulders of giants.” Sir Isaac Newton (1642 – 1727) Physicist.
3.5 Mass—A Measure of Inertia

3.5 Mass—A Measure of Inertia
PHYS 218 sec. 517-520 Review Chap. 4 Newton’s laws of motion.

PHYS 218 sec Review Chap. 4 Newton’s laws of motion.
Newton’s First Law of Motion: The Law of Inertia Physics Oct 12/15 Chapter 4 Kena Allison.

Newton’s First Law of Motion: The Law of Inertia Physics Oct 12/15 Chapter 4 Kena Allison.
Force Magnitude 1 Tension Elastic Force Gravity Normal Force Friction Drag.

Force Magnitude 1 Tension Elastic Force Gravity Normal Force Friction Drag.
Everyday Forces Chapter 4 Section 4.

Everyday Forces Chapter 4 Section 4.
Newton 2 Slide 1 Newton’s 2 nd Law of Motion Force and Acceleration.

Newton 2 Slide 1 Newton’s 2 nd Law of Motion Force and Acceleration.
 Calculate the acceleration that this object experiences 30 kg 150 N.

 Calculate the acceleration that this object experiences 30 kg 150 N.
Chapter 4 4-4 everyday forces.

Chapter everyday forces.
Forces and Friction. The weight of an object depends on the strength of gravity wherever the object is. The mass always stays the same.

Forces and Friction. The weight of an object depends on the strength of gravity wherever the object is. The mass always stays the same.
Forces Chapter 4. Force & Motion Force-a push or a pull on an object System-the object(s) experiencing the force Environment-the world around the system.

Forces Chapter 4. Force & Motion Force-a push or a pull on an object System-the object(s) experiencing the force Environment-the world around the system.
Chapter 12: Forces and Motion

Chapter 12: Forces and Motion
Physics Unit Four Forces that Affect Motion. Force A push or a pull. Measured in newtons with a spring scale. 1 newton (N) = 1 kg m/s 2 An apple weighs.

Physics Unit Four Forces that Affect Motion. Force A push or a pull. Measured in newtons with a spring scale. 1 newton (N) = 1 kg m/s 2 An apple weighs.
Newton’s 2 nd & 3 rd Laws. A couple things to keep straight Mass = the amount of “stuff” something is made of. Weight = the measure of the force of gravity.

Newton’s 2 nd & 3 rd Laws. A couple things to keep straight Mass = the amount of “stuff” something is made of. Weight = the measure of the force of gravity.
FIRST Handback quizzes Homework discussion, and talking about cars and hills with a video. Next time: HW turn in HW FOR NEXT TIME: The one titled homework.

FIRST Handback quizzes Homework discussion, and talking about cars and hills with a video. Next time: HW turn in HW FOR NEXT TIME: The one titled homework.
Forces & Newton’s Laws of Motion

Forces & Newton’s Laws of Motion
Answer all questions on a piece of loose leaf and turn in at the end of the period for homework credit. Unit 4 Review.

Answer all questions on a piece of loose leaf and turn in at the end of the period for homework credit. Unit 4 Review.
Chapter 4 Forces and the Laws of Motion. Newton’s First Law An object at rest remains at rest, and an object in motion continues in motion with constant.

Chapter 4 Forces and the Laws of Motion. Newton’s First Law An object at rest remains at rest, and an object in motion continues in motion with constant.

Similar presentations

Ads by Google