Proportion. Galileo Was unable to measure the acceleration of gravity accurately. a = g = 9.80 m/s² Discovered Change in velocity is proportional to the.

Slides:

Advertisements

Similar presentations

1/8 AND, OR and NOT b How many boys? b How many girls? b How many blue? b How many red?

Advertisements

Newtons Second Law Unit 6.4.

Chapter 6 NEWTON’S 2 ND LAW Unbalanced Force Causes Acceleration.

After Galileo. When we Left Galileo Inquisition 1633: – “vehemently suspect of heresy” – that the Sun lies motionless at the center of the universe, that.

Inverse Proportion. When a Lever is Balanced... The torques are equal F ∙ d = F ∙ d 80 g ∙ 25 cm = 100 g ∙ 20 cm 2000 g cm = 2000 g cm English: g-cm (hyphen)

Physics of soccer. Topics  Newton's Laws of physics  Mass  Velocity  Acceleration  Inertia  Momentum  Kinetic Energy  Potential Energy  Gravity.

Mechanical Force Notes

Slide1: 50 Newton is about equal to lbs lbs lbs lbs lbs.

Similar Shapes and Scale Drawings

Designing with Proportions  What is proportionality?  How do you use a scale factor to create proportionality?

Direct Variation: y varies directly as x (y is directly proportional to x), if there is a nonzero constant k such th at 3.7 – Variation The number k is.

2.5 Solving Proportions Write and use ratios, rates, and unit rates. Write and solve proportions.

Isaac Newton’s 3rd Law and the Universal Law of Gravitation

Newton’s Second Law of Motion Force & Acceleration Introduction to Science A. King EHS.

How does an object move when a force acts on it? Connects FORCE, MASS, ACCELERATION Newton’s Second Law of Motion (Textbook pages )

Newton’s Laws of Motion. Dynamics and Forces Dynamics: Connection between force and motion. Explains why things move. Dynamics: Connection between force.

An Introduction to Forces: More Practice

Force, Mass and Momentum. Newton’s Second Law: F = ma 1 newton = 1 kg ∙ 1 m/s² Force: 1 pound = 4.45 newtons Your weight is the force of gravity: F =

All quantities in Physics can be categorized as either a scalar or a vector quantity. A scalar quantity has magnitude (amount) only without direction.

Math Review/ Physical Properties. Old Business Two Graduate Assistants Kevin Blue Justin Darrow helping out Check.

Newton’s Laws Objects change velocity only when they are accelerated Acceleration happens when an object is acted on by a force The acceleration is proportional.

The Three Laws. Galileo Rolled Cannon Balls Down Inclined Planes Concluded ∆v ~ ∆t Noticed that if the plane was level  ∆v = 0 Velocity would not change.

Direct and Inverse Variations Direct Variation When we talk about a direct variation, we are talking about a relationship where as x increases, y increases.

Newton’s Second Law of Motion. And it states … The acceleration of an object will be in the same direction and directly proportional to the net force.

Force Chapter 4 (Ewen et al. 2005) Objectives: Related force and the law of inertia. Apply the law of acceleration.

Review Question What are Kepler’s laws?. Review Question What are Newton’s laws?

Newton’s Laws of Motion We have studied “kinematics”, or the description of motion. Now, we look at “dynamics”, the causes of motion.

Data Accurate Measurements. The Protractor Tycho Brahe 1546 –1601 Accuracy to one minute of arc 1/60 degree = 1 nautical mile sextant.

Warm Up Explain how weight, matter, mass, and gravity are related? What units are used for Force? Explain the concept of Inertia (use an example or 2)

Chapter 4 Dynamics: Newton’s Laws of Motion

Section – Ratio, Proportion, Variation The Vocabulary.

Direct & Inverse Variation

Direct and Inverse Variations Direct Variation When we talk about a direct variation, we are talking about a relationship where as x increases, y increases.

Ch. 3 & 4 Motion & Forces I. Newton’s Laws of Motion “If I have seen far, it is because I have stood on the shoulders of giants.” - Sir Isaac Newton (referring.

 Acceleration is the rate that velocity changes over time.  An object is accelerating if ◦ Its speed changes ◦ Its direction changes ◦ Both its speed.

HAWKES LEARNING SYSTEMS math courseware specialists Copyright © 2011 Hawkes Learning Systems. All rights reserved. Hawkes Learning Systems: Developmental.

Graphing with Computers Pressure and Density. What is Pressure? Pressure = Force = lbs area in 2 Let me propose the following experiment.

NEWTON’S LAWS OF MOTION. Sir Isaac Newton  Born Jan. 4, 1643 in England.  As a young student, Newton didn’t do well in school.  He worked hard and.

Force and Motion ISCI Force: ‘push’ or ‘pull’ on an object 2. Objects in motion stay in motion unless enacted upon by a ‘unbalanced’ force. Newton’s.

Notes Over 11.1 Proportions Vocabulary Proportion - an equation that states that two ratios are equal. Cross Product Property - the product of the extremes.

Jeopardy First Law Second Law Third LawDefinitionsForces Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400 Q $500 Final Jeopardy.

Notes: Forces Big “G” and little “g” Newton’s Law of Universal Gravity -F g, the force of attraction between two objects is directly proportional to the.

Gas Laws. Boyles Law -Pressure and volume are Inversely proportional, or as one increases the other decreases at the same rate, assuming temperature is.

Unit 8: Day 1 Direct and Inverse Variation. Definition… Direct Variation: y varies directly as x This means as x increases, y __________ as x decreases,

NEWTON’S 2 ND LAW OF MOTION By: Per.7. WHAT IS IT? Newton's second law Of Motion Newton's second law Of Motion can be formally stated as follows: The.

Forces and Newton’s Laws Houston, We Have a Problem! Lesson.

Proportions. Learning Objectives Define proportionality and apply it to problems.

Newton’s 2 nd Law Force and Acceleration. Galileo Conceptualized Acceleration G – Money defined the rate of change of velocity as acceleration Acceleration.

Joe’s Sprinkle Company Color of Sprinkles: Orange: 34% Blue: 56% Red: 10% The following custom sprinkle order needs to be filled To fill this order you.

Physical Development of the Preschooler Chapter 15.

Mass, Weight, and Gravity. Mass vs. Weight  Mass is a measurement of the amount of material something contains, while weight is the measurement of the.

Law of Gravitation. Law of Gravity  Gravitational Force  All objects have mass and therefore will attract all other objects.  The size of the gravitational.

Notes: Forces Big “G” and little “g” Newton’s Law of Universal Gravity F g, the force of attraction between two objects is directly proportional to the.

Measuring Matter Chapter 14-2 pp Why do scientists measure matter? Measuring matter is another way scientists can describe matter. Measuring.

Topic: Gravity and Motion PSSA: C/S8.C.1.1.

Direct and Inverse.

Gas Behavior Chapter 2.

A scale drawing is a drawing in which all parts of the drawing are reduced or enlarged by the same scale factor. A scale is a ratio that compares the measurements.

I. Newton’s Laws of Motion

Vertical Motion Problems

I. Newton’s Laws of Motion

11.7: Surface Area and Volume for Similar Solids

LAW OF FALLING BODIES.

Forces and the Laws of Motion

Atmospheric Pressure Pressure is equal to a force per area. The gases in the air exert a pressure called atmospheric pressure. Atmospheric pressure is.

I. Newton’s Laws of Motion

I. Newton’s Laws of Motion

I. Newton’s Laws of Motion

Dynamics: Cause of Motion

Presentation transcript:

Proportion

Galileo Was unable to measure the acceleration of gravity accurately. a = g = 9.80 m/s² Discovered Change in velocity is proportional to the time elapsed. Δv ~ t

Proportion When I was growing up Little girls played with dolls 1959 ! Barbie Proportion Head to height – Baby 1:3 – Adult woman 1:7 A Proportion Equal Ratios Head Height Adult 9" 63" Barbie 2" 14" Prob Set 1Q

It’s about the Relationship The greater the force, the greater the stretch Force ~ Stretch F ~ x or F α x F = k ∙ x F 1 /x 1 = k = F 2 /x 2 F 1 /x 1 = F 2 /x 2 x 2 /x 1 = F 2 /F 1 x 2 is to x 1 as F 2 is to F 1 Blue is to pale blue as red is to __________ The Stretch is Proportional to the Force

We can use Any Units F 1 /x 1 = F 2 /x 2 20 pounds is to 4 inches as 10 pounds is to 2 inches 20 lbs : 4" :: 10 lbs : 2" F 2 /F 1 = x 2 /x 1 20 lbs is to 10 lbs as 4 inches is to 2 inches 20 lbs : 10 lbs = 4" : 2“ = 2 pure number Prob Set 14B

Pressure and Volume are Inversely Related When the volume goes down, the pressure goes up Pressure is inversely proportional to volume P ~ 1 / V P = k / V P 1 V 1 = k = P 2 V 2 P 1 V 1 = P 2 V 2 P 1 /P 2 = V 2 /V 1 Direct: F 1 /x 1 = F 2 /x 2 Inverse: P 1 V 1 = P 2 V 2 or: P 1 /P 2 = V 2 /V 1 Prob Set 14G

A Scale Drawing is in Proportion 4" x 10" 6" x 15" Both Ratios are 2 : 5