Facts about Newton's Laws
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Newton's 1st Law Explained
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Newton's 2nd Law
Acceleration - the rate at which the velocity of an object changes over time.
Aerodynamic - able to move through the air with as little air resistance as possible.
Air resistance - the force of friction on a vehicle as it moves through the air.
Axle - a bar or shaft that goes through the center of a wheel upon which the wheel turns.
Balanced force - when all foeces acting on an object are in balance; object does not move.
Blueprint - a detailed plan or drawing that shows how something is designed.
Cost effective - able to produce the best results for the least money.
Data - information, such as that gathered during an experiment.
Drag - force that opposes the forward movement of a vehicle.
Energy - the ability to do work or to move something.
Force - a push or pull that can make something move or change the way it moves.
Friction - force that resists movement between two objects that are touching.
Gravity - a force of attraction between any two masses.
Inclined plane - simple machine; a flat, slanted surface that helps move an object up or down.
Inertia - teh tendency of an object to resist any change in motion.
Kinetic energy - energy of motion.
Load - something that is lifted, carried, or supported.
Lever - simple machine; a bar that lifts or moves something at one end when the other end is pushed.
Machine - a device that changes the direction or amount of force needed to do work.
Mass - the amount of matter in an object.
Motion - the act of moving; to go from one place or position to another.
Newton's 1st Law of Motion - an object at rest remains at rest or an object in motion remains in motion until a force acts upon it (inertia).
Newton's 2nd Law of Motion - when a force is exerted on an object, the force acts to increase the speed of that object, to change its direction, or to slow or stop its motion.
Newton's 3rd Law of Motion - for every action there is an opposite and equal reaction.
Position - the place where an object or person is.
Potential energy - stored energy that can be released to become other forms of energy.
Prototype - an original model or design.
Pull - move something toward you.
Pulley - simple machine; a wheel with a grooved rim where you put a rope or a chain that can run to change the direction of the pull, making it easier to lift a load.
Push - move something away from you.
Ramp - simple machine; a slanted surface that connects different levels.
Recursive testing - retesting and revising a product; part of the technological design process.
Screw - simple machine; a thin pole with a raised ridge or thread wrapped around it in a spiral.
Simple machine - something that helps you do work and has few or no moving parts.
Slope - to be at an angle; not level.
Speed - a measure of how far an object moves in a certain amount of time. Speed = Distance / Time
Sir Isaac Newton - English mathematician and physicist, 1643 - 1727, who described gravity and the three laws of motion.
Technological design - the process of designing and building products and systems to meet human needs.
Step 1 - Identify the need or problem.
Step 2 - Come up with a possible design or solution.
Step 3 - Test and evaluate your design/solution.
Step 4 - Develop a prototype.
Template - a set pattern, mold or form.
Tension - the force exerted by a stretched object, such as a spring or rubber band.
Three view drawing - a diagram, showing top, side and front views of an object.
Unbalanced force - when opposite sides have unequal forces; the object moves.
Velocity - the speed and direction of an object's motion.
Wedge - simple machine; a piece of metal or other material that has a pointed edge at one end and is thicker at the other end.
Weight - a measurement of the force of gravity on an object.
Wheel and Axle - simple machine; made up of a wheel and an axle that work together.
Work - the act of moving someting.
Work = Force x Distance.
INERTIA is a property of matter. Inertia is the quality that either prevents an object from moving, changing direction, changing speed, or stopping.
A FORCE is either a push or pull on an object!
FRICTION is what happens when any two things rub against each other. These can be solid things, like your two hands rubbing together, or your skis rubbing on the snow, or a hammer hitting a nail, or they can be gases, like friction with theair slowing down your car, or liquids, like friction with the water slowing down a boat.
MOTION is movement! MOTION is one part of what physicists call mechanics.
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