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Newton’s laws of Motion

Newton’s First Law of Motion  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.  This law is often called: The Law of Inertia “ The 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.  This law is often called: The Law of Inertia “ The Law of Inertia ".

What is a force?  A force is a push or a pull. A force can give energy to an object causing the object to start moving, stop moving, or change its motion.  Forces occur in pairs and can be either balanced or unbalanced.  Lets check out this website. ForcesForces  A force is a push or a pull. A force can give energy to an object causing the object to start moving, stop moving, or change its motion.  Forces occur in pairs and can be either balanced or unbalanced.  Lets check out this website. ForcesForces

What is Inertia?  Inertia is the idea that an object keeps moving unless acted upon by an outside force.  What are some forces that might act on a Frisbee that has been thrown that will keep it from moving forward forever? Gravity Fluid Friction or Air Friction A Solid Object in Its Path  Inertia is the idea that an object keeps moving unless acted upon by an outside force.  What are some forces that might act on a Frisbee that has been thrown that will keep it from moving forward forever? Gravity Fluid Friction or Air Friction A Solid Object in Its Path

 Demonstration 1: Book and paper  Demonstration 2: Frisbee (Still/Thrown)  Demonstration 3: Probe in Space  Demonstration 4: A Planet’s Rotation Around the Sun.  Animated Demonstration: CrashTube CrashTube  Demonstration 1: Book and paper  Demonstration 2: Frisbee (Still/Thrown)  Demonstration 3: Probe in Space  Demonstration 4: A Planet’s Rotation Around the Sun.  Animated Demonstration: CrashTube CrashTube What are examples that Demonstrate Newton’s First law?

Newton’s Second Law of Motion  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).  The Formula for Newton’s Second Law is Force = (Mass) (Acceleration) or F=MA  What does that mean? Here is an example. example  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).  The Formula for Newton’s Second Law is Force = (Mass) (Acceleration) or F=MA  What does that mean? Here is an example. example

What is Acceleration?  Definition Definition  What are some objects of greater mass? Lesser mass? Greater: boulder, vehicle, mountain, elephant, adult Lesser: Cat, dog, pebble, feather, small child  Definition Definition  What are some objects of greater mass? Lesser mass? Greater: boulder, vehicle, mountain, elephant, adult Lesser: Cat, dog, pebble, feather, small child

What are examples that Demonstrate Newton’s Second law?  Demonstration 1: Paper Boxes Car vs. Semi  Demonstration 2: Car vs. Semi  Demonstration 3: Move Mr. Adams  Demonstration 4: TubemanTubeman  Launcher Activity: Which goes further: a Tennis Ball, a Baseball, or a Steel Boule.Distance Measurement SheetDistance Measurement Sheet  Demonstration 1: Paper Boxes Car vs. Semi  Demonstration 2: Car vs. Semi  Demonstration 3: Move Mr. Adams  Demonstration 4: TubemanTubeman  Launcher Activity: Which goes further: a Tennis Ball, a Baseball, or a Steel Boule.Distance Measurement SheetDistance Measurement Sheet

Newton’s Third Law of Motion  For every action there is an equal and opposite re-action.  Action vs. Reaction  Examples of Action/Reaction Push a box/Box moves Push a box/Box moves Rocket fires/rocket moves Rocket fires/rocket moves  For every action there is an equal and opposite re-action.  Action vs. Reaction  Examples of Action/Reaction Push a box/Box moves Push a box/Box moves Rocket fires/rocket moves Rocket fires/rocket moves

What are examples that Demonstrate Newton’s Third law?  Demonstration 1: Skateboard Boatman jump Boatman jump  Demonstration 2: Boatman jumpBoatman jump  Demonstration 3: Canoeing  Demonstration 4: RocketsRockets  Milk Carton Water Wheel Activity Milk Carton Water Wheel Activity  Demonstration 1: Skateboard Boatman jump Boatman jump  Demonstration 2: Boatman jumpBoatman jump  Demonstration 3: Canoeing  Demonstration 4: RocketsRockets  Milk Carton Water Wheel Activity Milk Carton Water Wheel Activity

Water Rocket Activity: Combining the Laws  How does a water rocket demonstrate each of Newton’s Laws of motion? Newton's First Law: Newton's First Law: Newton’s Second Law: Newton’s Second Law: Newton's Third Law: Newton's Third Law:  Perform Water Rocket Experiment Chart, measurements, and calculations. Chart, measurements, and calculations. Water Rocket Data Sheet Water Rocket Data Sheet Water Rocket Data Sheet Water Rocket Data Sheet Water Rocket Questions Water Rocket Questions Water Rocket Questions Water Rocket Questions  How does a water rocket demonstrate each of Newton’s Laws of motion? Newton's First Law: Newton's First Law: Newton’s Second Law: Newton’s Second Law: Newton's Third Law: Newton's Third Law:  Perform Water Rocket Experiment Chart, measurements, and calculations. Chart, measurements, and calculations. Water Rocket Data Sheet Water Rocket Data Sheet Water Rocket Data Sheet Water Rocket Data Sheet Water Rocket Questions Water Rocket Questions Water Rocket Questions Water Rocket Questions