force, motion, energy

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Force, Motion and Force, Motion and Energy Energy

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Page 1: Force, Motion, Energy

Force, Motion and Force, Motion and EnergyEnergy

Page 2: Force, Motion, Energy

How do things move?How do things move? AboveAbove BelowBelow AheadAhead BehindBehind UpUp DownDown HorizontallyHorizontally VerticallyVertically Right Right LeftLeft

Page 3: Force, Motion, Energy

How do we know something How do we know something has moved?has moved?

By looking at the things By looking at the things that are not moving that are not moving around it. around it.

FRAME OF REFERENCE FRAME OF REFERENCE

Page 4: Force, Motion, Energy

SpeedSpeed

What is speed? What is speed? How fast an object How fast an object

is moving.is moving. Measure of Measure of

distance.distance.

Page 5: Force, Motion, Energy

SpeedSpeed

How do I calculate How do I calculate speed? speed?

DISTANCE / TIMEDISTANCE / TIME

Ex:10ft/ 3 seconds=3.1 ft/secEx:10ft/ 3 seconds=3.1 ft/sec

Page 6: Force, Motion, Energy

ForceForce

WHAT IS FORCEWHAT IS FORCE??

Any Any pushpush or or pullpull that that causes an object to causes an object to move, move, stopstop or or change change speedspeed or or directiondirection. .

Page 7: Force, Motion, Energy

ForceForce

The greater the The greater the force, the greater the force, the greater the change in motion. change in motion.

The bigger an object The bigger an object is, the less effect a is, the less effect a force will have on it.force will have on it.

The smaller an object The smaller an object is, the more effect a is, the more effect a force will have on it.force will have on it.

Page 8: Force, Motion, Energy

InertiaInertia

InertiaInertia keeps an keeps an object still or keeps object still or keeps it moving. it moving.

A moving object will A moving object will keep moving until keep moving until something stops itsomething stops it..

An object that is not An object that is not moving will not moving will not move until move until something moves something moves itit. .

Page 9: Force, Motion, Energy

FrictionFriction

WHAT IS FRICTION?WHAT IS FRICTION? The force that works The force that works

against motion.against motion. Friction causes heat. Friction causes heat.

Page 10: Force, Motion, Energy

WorkWork

WHAT IS WORK?WHAT IS WORK? Work is done when Work is done when

a force is used to a force is used to MOVEMOVE an object a an object a certain distance.certain distance.

Page 11: Force, Motion, Energy

EnergyEnergy

WHAT IS ENERGY?WHAT IS ENERGY?

Energy is the ability to do work.Energy is the ability to do work.

Page 12: Force, Motion, Energy

EnergyEnergy

Two types of Two types of energy:energy:

Kinetic Kinetic PotentialPotential

Page 13: Force, Motion, Energy

EnergyEnergy

Kinetic-moving Kinetic-moving energy (energy of energy (energy of motion)motion)

Page 14: Force, Motion, Energy

EnergyEnergy

Potential- stored Potential- stored energy (energy energy (energy waiting to be used)waiting to be used)

Page 15: Force, Motion, Energy

Forms of EnergyForms of Energy

Chemical EnergyChemical Energy Ex: Ex: storedstored energy energy

in food and fuel.in food and fuel.

Page 16: Force, Motion, Energy

Forms of EnergyForms of Energy

Electrical EnergyElectrical Energy Ex: batteries, Ex: batteries,

electric in homeselectric in homes

Page 17: Force, Motion, Energy

Forms of EnergyForms of Energy

Light energyLight energy Ex: sun and lasersEx: sun and lasers

Page 18: Force, Motion, Energy

Forms of EnergyForms of Energy

Mechanical EnergyMechanical Energy Ex: wind, water Ex: wind, water

falling over a water falling over a water fall, soundfall, sound

Page 19: Force, Motion, Energy

Forms of EnergyForms of Energy

Thermal EnergyThermal Energy Ex: stove, heaters, Ex: stove, heaters,

matchesmatches

Page 20: Force, Motion, Energy

Forms of EnergyForms of Energy

Nuclear EnergyNuclear Energy Ex: SunEx: Sun

Page 21: Force, Motion, Energy

Forms of EnergyForms of Energy

CAN ENERGY CAN ENERGY CHANGE FORM? CHANGE FORM? YES! YES!

Ex: The fuel in a Ex: The fuel in a rocket changes rocket changes from chemical from chemical energy to energy to mechanical energy mechanical energy when the fuel when the fuel burns burns

Page 22: Force, Motion, Energy

Simple MachinesSimple Machines

LeversLevers PulleyPulley Wheel and AxelWheel and Axel Inclined PlaneInclined Plane Wedge and ScrewWedge and Screw GearsGears

Page 23: Force, Motion, Energy

Simple MachinesSimple Machines

LeversLevers

Two parts:Two parts:

FulcrumFulcrum

BarBar

Page 24: Force, Motion, Energy

Simple MachinesSimple Machines

PulleyPulley Two kinds: Two kinds:

FixedFixed

MoveableMoveable

Page 25: Force, Motion, Energy

Simple MachinesSimple Machines

Wheel and AxelWheel and Axel Two parts:Two parts:

wheel wheel

barbar

Page 26: Force, Motion, Energy

Simple MachinesSimple Machines

Inclined PlaneInclined Plane

A flat, slanted A flat, slanted surfacesurface

Page 27: Force, Motion, Energy

Simple MachinesSimple Machines

Wedges and Wedges and ScrewsScrews

change change downward downward force into force into sidewayssideways forceforce

Page 28: Force, Motion, Energy

Simple MachinesSimple Machines

GearsGearsWheels with teethWheels with teeth

Page 29: Force, Motion, Energy

Compound MachinesCompound Machines

WHAT IS A WHAT IS A COMPOUND COMPOUND MACHINE?MACHINE?

A machine made up A machine made up of two or more of two or more simple machines.simple machines.