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Motion and Forces - Coggle Diagram
Motion and Forces
Forces
Forces change motion
A force is a push or pull
Types of forces
Size and direction of forces
Balanced and unbalanced forces
Forces on moving objects
Newton's first law relates force and motion
Galileo's thought experiment
Newton's first law
Interia
Force and mass determine acceleration
Newtons second law relates force,mass, and acceleration
Newtons second law
Force equals mass times Acceleration
Force=mass*acceleration F=ma
Mass and acceleration
Forces can change the direction of motion
Centripetal force
Circular Motion and Newton's second law
Forces act in pairs
Newton's third law relates action and retraction forces
Action and retraction Paairs
Action and retraction forces versus balanced forces
Newton's three laws describe and predict motion
Forces transfer momentum
Objects in motion have momentum
momentum=mass*velocity p=mv
Momentum can be transfered from one object to another
Momentum is conserved
Two types of Collisions
Momentum and Newton's third law
Gravity, Friction, and Pressure
Gravity is a force exerted by masses
Masses attract eachother
The force of gravity
Gravity on earth
Weight and mass
Gravity keeps objects in orbit
Spacecraft in orbit
People in orbit
Friction is a force that opposes motion
Friction occurs when surfaces slide against each other
Forces and surfaces
Friction and heat
Motion thought fluids produces friction
pressure depends on force and area
Pressure describes how a force is spread over and area
Pressure acts in all directions in fluids
Pressure in fluids depends on depth
Pressure in air
Pressure in water
Fluids can exert a force on object
Fluids can exert an upwards force on objects
Buoyancy
Density and buoyancy
The motion of a fluid affects its pressure
Bernoulli's principal
Applying Bernoulii's principal
Forces can be transmitted through fluids
ascals principal
Motion
An Object in motion changes position
Position describes the location of an object
Describing a position
Measuring Distance
Motion is a change in position
relative motion
Describing motion
Speed measures how fast position changes
position can change at different rates
Calculating speed
Average speed
Distance-time graphs
Velocity includes the speed and direction
Velocity
Velocity versus speed
Acceleration measures how fast velocity changes
Acceleration can be calculated from velocity and time
Clculating acceleration
Acceleration over time
Velocity-time graphs
Speed and direction can change with time
Work and Energy
Work is the use of force to move an object
Force is necessary to do work
Force, Motion, and work
Calculating work
Objects that are moving can do work
Energy is transferred when work is done
Work transfers energy
Work changes potential and kinetic energy
Calculating GPE
Calculating Kinetic energy
Calculating Mechanical energy
The total amount of energy is constant
Conserving menhanical energy
Losing mechanical energy
Forms of energy
Power is the rate at which work is done
Power can be calculated from work and time
Calculating power from work
Horsepower
owner can be calculated from energy and time
Calculating power from energy
Everyday power
Machines
Machines can help people do work
Machines change the way force is applied
Changing size and distance
Changing direction
Mechanical advantage of a machine
Work transfers energy
Energy
Work
Output work is always less than input work
Efficiency and energy
Increasing efficiency
Six simple machines have many uses
There are six simple machiens
Lever
Eheel and axel
Pully
Incliened plane
Wedge
Screw
The Mechanical advantage of a machine can be calculated
Modern technology uses compound machines
Compound machines re combonations of simple machienes
Gears
Mechanical advantage of compound machines
Modern technology creates new uses doe machines
Microtechnology and nanotechnology