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Motion and Forces - Coggle Diagram
Motion and Forces
Chapter 2 - Forces
2.1 - Forces change motion
2.2 - Force and Mass determine acceleration
Force = mass*acceleration
2.3 - Forces act in pairs
2.4 - Forces transfer momentum
objects in motion have momentum
momentum = mass*velocity
Chapter 3 - Gravity friction and pressure
3.1 - Gravity is a force exerted by masses
3.2 - Friction is a force that opposes motion
3.3 - Pressue depends on force and area
Pressure describes how a force is spread over an area
Pressure = Force/area
3.4 - Fluids can exert a force on objects
Chapter 1 - Motion
1.1 - An object in motion changes position
1.2 - Speed measures how fast position changes
Calculating speed
Speed= distance - time
1.3 - Acceleration measures how fast velocity changes
Calculating acceleration
acceleration = final velocity -initial velocity/time
Chapter 5 - Machines
5.1 - Machines help people do work
Mechanical Advantage of a Machine
Machine advantage = output force /input force
Output work is always less than input work
Efficiency (%) = output work/input work *100
5.2 - Six simple machines have many uses
the mechanical advantage of a machine can be calculated
Mechanical Advantage = output force/input force
Ideal mechanical advantage = radius of input /radius of output
ideal mechanical advantage = distance from input force to fulcrum/distance from output force to fulcrum
5.3 - Modern technology uses compound machines
Chapter 4 - Work and energy
4.1 - Work is the use of a force to move an object
Calculating Work
Work = Force * distance
4.2 - Energy is transferred when work is done
Calculating Gravitation Potential Energy
GPE = MGH (mass
gravitational acceleration
height)
Calculating Mechanical Energy
ME= Potential energy + Kinetic energy
4.3 - Power is the rate at which work is done
Calculating power for work
Power = Work/Time
Calculating power from Energy
Power = Energy/Time