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Motion and Energy Motion- An object is in Motion when __________________________ __________________________ __________________________ __________________________

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Motion and Energy Motion- An object is in Motion when a place or object that can be used to determine if an object is in motion.

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Examples of Newton’s 1st Law: * a marble will not move unless forced. * once a marble is moving, it doesn’t stop until forced to!

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* if you don’t wear your seatbelt, you have no force to stop you when the car crashes! since you keep moving, you fly through the windshield! (and DIE)

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Motion and Energy Speed= _____________________________ __________________________

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Motion and Energy Speed = Distance divided by Time

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Motion and Energy Velocity - __________________________ __________________________

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Motion and Energy Velocity – The speed of an object moving in a particular direction

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Motion and Energy Velocity – The velocity of the airplane is defined by both its direction and speed.

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Motion and Energy Velocity – The rate at which the velocity of an object changes is called acceleration. That means that an object is accelerating whenever it speeds up, slows down or changes direction.

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Motion and Energy A Force is a push or pull. Unbalanced Force acting on an object will change the object’s motion. Equal forces that act on an object in opposite directions are called Balanced Forces.

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Motion and Energy Newton’s Laws of Motion First law Motion- __________________________ __________________________

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Motion and Energy Newton’s Laws of Motion First law Motion- objects at rest stay at rest unless a force acts upon it. In two unbalanced forces, friction, air resistance, slow it down.

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Motion and Energy __________ measures an object’s tendency to remain at rest or keep moving. Inertia is related to mass.

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Motion and Energy Inertia measures an object’s tendency to remain at rest or keep moving. Inertia is related to mass.

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Motion and Energy Newton’s Second Law - __________________________ __________________________

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Motion and Energy Newton’s Second Law – The net force on an object is equal to the mass of the object multiplied by it’s acceleration.

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Motion and Energy Force = Mass x Acceleration Weight and mass are not the same thing. Weight changes when the acceleration due to gravity changes.

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Newton’s 2nd Law of Motion: Force = mass X acceleration This means that the magnitude of the force is decided by how big and heavy an object is, and how fast it is moving! x =

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This makes sense: big, heavy objects have a lot of force. An elephant doesn’t have to move fast! Small objects can have a lot of force if they are moving FAST. -a bullet thrown by hand does nothing, but shot at high speed it can kill!

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* Things dropped from a moving vehicle don’t fall straight down! * they keep moving forward until another force stops them! 10 N 50 N

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Motion and Energy Mass remains the _________ no matter what weight is.

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Motion and Energy Mass remains the same no matter what weight is.

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Motion and Energy Third Law of Motion - __________________________ ____________________

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Motion and Energy Third Law of Motion – for every action there is an equal and opposite reaction.

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Newton’s Third Law of Motion: For every action, there is an equal and opposite reaction. Translation: If you push, you also get pushed back!

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This is why we are able to jump-- when we push the ground, it pushes back!

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Motion and Energy Using the second law equation, the object with the larger mass has the smaller ________________________ if the same force is applied.

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Motion and Energy Using the second law equation, the object with the larger mass has the smaller acceleration rate if the same force is applied.

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Motion and Energy The three laws of motion describe how any object moves when ___________ acts on it.

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Motion and Energy The three laws of motion describe how any object moves when force acts on it.

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Motion and Energy Types of Energy Potential Energy - _____________________ Example:

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Motion and Energy Types of Energy Potential Energy - Stored energy Example: ROLLER COASTER AT TOP OF HILL

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Motion and Energy Types of Energy Kinetic Energy – ________________________ Example:

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Motion and Energy Types of Energy Kinetic Energy – Energy in Motion Example: ROLLER COASTER ROLLING DOWN THE HILL

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