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Unit C motion and Forces - Coggle Diagram
Unit C motion and Forces
Unit C Motion and Forces
Chapter 1 ( a object in motion changes position
1.1
Position describes the location of an object
Motion is a change in position
1.2
Position can change at different rates
Calculating Speed
Speed = Distance/Time
Velocity includes speed and direction
1.3
Speed and direction can change with time
Acceleration can be calculated from velocity and time
Calculating Acceleration
Acceleration = (Final velocity - initial velocity)/time
Chapter 2 ( Forces change motion)
2.1
A force is a push or a pull
Types of force are:
Contact force
Gravity
Friction
2.2
Newton's first law relates force and motion
Force = Mass times Acceleration
Forces can change the direction of motion
2.3
Newton's third law relates oaction and reaction forces
Newtons three laws describe and predict motion
2.4
Objects in motion have momentum
Momentum = mass * velocity
Momentum can be transferred from one object to another
Momentum is conserved
Chapter 3 ( gravity, friction, and pressure
3.1
Masses atract each other
Gravity keeps objects in orbit
3.2
Friction occurs when surfaces slide against each other
Motion through fluids produces friction
3.3
Pressure describes how a force is spread over an area
Pressure = force/ area
Pressure acts in all directions in fluids
Pressure in fluids depends on depth
3.4
Fluids can exert an upward force on objectrs
The motion of a fluid affects its pressure
Forces can be transmitted through fluids
Chapter 4 ( work and Energy)
4.1
Force is necessary to do work
Work = Force * distance
Objects that are moving do work
4.2
Work transfers energy
Work Changes Portential and Kinetic energy
KE = 1/2 mv^2
ME = PE + KE
The total amount of Energy is constanant
4.3
Power can be calculated from work and time
Power = work/time
Power can be calculated from energy and time
Power = energy / time
Chapter 5 ( machines)
5.1
Machines change the way force is applied
Machanical advantage = output force / Input force
Work transfers energy
Output work is always less thang input work
5.2
There are 6 simple machines
Mechanical advantage of a machine can be calculated
5.3
Compound machines are combinations of simple machines
Modern tech creates new uses for machines