Thinking Like and Thinking Like and EngineerEngineer

Inventions and Innovations Inventions and Innovations

Newton’s Three Laws of Newton’s Three Laws of MotionMotion

►What do you think the Three What do you think the Three Laws of Motion are? Laws of Motion are?

►Who is Sir Isaac Newton?Who is Sir Isaac Newton?

Sir Isaac NewtonSir Isaac Newton► Cambridge College, in Cambridge College, in

Great Britain, graduate Great Britain, graduate who was very interested who was very interested in mathematics, gravity, in mathematics, gravity, and optics. and optics.

► His discovery of the His discovery of the three laws of motion three laws of motion allowed for mechanical allowed for mechanical engineers to create new engineers to create new inventions during the inventions during the Industrial Revolution in Industrial Revolution in the 1600’s.the 1600’s.

► How will you use his How will you use his three laws of motion? three laws of motion?

First Law of MotionFirst Law of Motion

►The Law of Inertia- without a force, like The Law of Inertia- without a force, like a push or a pull, an object will not move a push or a pull, an object will not move or stop moving. or stop moving.

►All matter- a rock, a house, even you All matter- a rock, a house, even you have inertia. have inertia.

► Inertia is the resistance an object has to Inertia is the resistance an object has to the change of motion. Do you think a the change of motion. Do you think a large rock or a piece of paper has more large rock or a piece of paper has more inertia? inertia?

What are examples of What are examples of force? force?

http://www.youtube.com/watch?v=DEoGSV41q-M

ForcesForces

► A pushA push► PullPull► FrictionFriction►GravityGravity► Electrical ForcesElectrical Forces►Magnets Magnets ►Wind Wind

May the Force be with May the Force be with you……..you……..

Inertia Coin MagicInertia Coin Magic

►What do you think will happen to the What do you think will happen to the coins? coins?

►What actually happened to the coins? What actually happened to the coins?

First Law Continued…..First Law Continued…..

How might an How might an engineer or engineer or

inventor use this inventor use this law? law?

Second Law of MotionSecond Law of Motion

► F=MA The greater the force on an object, F=MA The greater the force on an object, the greater the change of motion. The the greater the change of motion. The greater the mass of an object, the greater greater the mass of an object, the greater force needed to change it’s motion. force needed to change it’s motion.

► Can you hit a baseball further than a two Can you hit a baseball further than a two year old? Why? year old? Why?

► Is it harder to push a chair with or with Is it harder to push a chair with or with someone in the chair? someone in the chair?

► http://www.youtube.com/watch?http://www.youtube.com/watch?v=FgOiXrwYHrIv=FgOiXrwYHrI

Third Law of MotionThird Law of Motion

►For every action, there is an equal but For every action, there is an equal but opposite reaction. opposite reaction.

►When you throw two balls at each When you throw two balls at each other, what happens to the balls? other, what happens to the balls?

►What happens when you run into a What happens when you run into a wall?wall?

►http://www.youtube.com/watch?v=_sr3hBxu614

Eraser-Paper Race Eraser-Paper Race

►Do you think the paper or eraser has more Do you think the paper or eraser has more inertia? inertia?

►With a gentle flick, which one will travel With a gentle flick, which one will travel further?further?

►Which item has more mass?Which item has more mass?

►Do you think mass and inertia have a Do you think mass and inertia have a relationship? relationship?

Balloon ExperimentBalloon Experiment

►Predict what will happen if I threw two Predict what will happen if I threw two balloons at each other?balloons at each other?

►Using the third law explain how you Using the third law explain how you knew what was going to happen. knew what was going to happen.

Engineer and Inventors?Engineer and Inventors?

How might an How might an engineer or inventor engineer or inventor use the second and use the second and

third laws? third laws?

Remember….Remember….

Everyone is an Everyone is an engineer and an engineer and an

inventor! inventor!

Vocabulary ReviewVocabulary Review

►Inertia: is the resistance of any physical object to a change in its state of motion or rest, or the tendency of an object to resist any change in its motion

►Motion: the act of changing location from one place to another

►Force: A push or pull exerted on an object

Vocabulary ContinuedVocabulary Continued

►Acceleration: the rate of change in speed… getting onto the highway has more acceleration than turning into a neighborhood.

►Friction: Friction is resistance to a moving object. Friction is caused by one surface touching another. Ask the student if it would be easier to roller skate on a smooth roller skating rink, or a gravel road. Why?

Next Steps!Next Steps!

►You will be moving on to your engineering You will be moving on to your engineering project of a Bridge. All materials will be project of a Bridge. All materials will be provided.provided.

►With the bridge, you must add the following With the bridge, you must add the following vocab: aesthetics, gravity, compression, vocab: aesthetics, gravity, compression, scientific process, construction, mass, scientific process, construction, mass, conditions, design and function. Please put conditions, design and function. Please put these in your notebook, index cards or on these in your notebook, index cards or on the flashcard website.(Scholastic.com)the flashcard website.(Scholastic.com)

►Bridges will begin next week!Bridges will begin next week!