Clive W. Humphris

**MOTION: Speed, Velocity and Acceleration. **

If an object moves from one position to another it will have travelled at a certain velocity. This can be calculated by dividing the distance moved by the time taken. The only difference between speed and velocity is the latter defines the direction of movement.

If the object continues to travel at the same speed over twice the distance it is reasonable to expect it to take twice as long. Therefore there is a linear relationship between the variables.

However, if a vehicle travels from one town to another it doesn't always move at the same speed, some of the time it will be stationary or crawling in traffic and so average values must be used. Calculations might not always be at a convenient time or speed. In this case it is the change between two defined conditions that is of interest, i.e. how far did it travel between 2.00pm and 2.45pm clearly the period is 45 minutes. If at the time of measurement the vehicle was already speeding down a motorway then this is taken as an average mph.

Acceleration and deceleration are the rates of increase and decrease in velocity over time (unit of measurement is m/s²).

- Table of Contents
- Interactive eTextbooks
- Basic Electronics
- Conductor And Insulator
- Resistor Value Test
- Simple Dc Circuits
- Types Of Switching
- Variable Voltages
- Ohm's Law
- DC Voltage
- DC Current
- Series and Parallel Resistors
- AC Measurement
- AC Voltage and Current
- AC Theory
- RCL Series
- RCL Parallel
- Capacitance
- Capacitors
- Inductance
- Inductors
- Impedance
- Tuned Circuits
- Attenuators
- Passive Filters
- Active Filters
- Oscillators
- Circuit Theorems
- Complex Numbers
- DC Power
- AC Power
- Silicon Controlled Rectifier
- Power Supply
- Voltage Regulation
- Magnetism
- Electrical Machines
- Transformers
- Three Phase Systems
- Energy Transfer and Cost
- Atomic Structures
- Diode Theory
- Diode Applications
- Transistor Theory
- Bipolar Transistors
- Transistor Configurations
- Active Transistor Circuits
- Field Effect Transistors
- Basic Operational Amplifier
- Op-Amp Theory
- Op-Amp Applications
- Sum and Difference Amplifiers
- Analogue Multi-Meter
- Measurement
- Component Testing
- Area
- Surface Area and Symmetry
- Volume
- Compound Measures
- Geometry
- Motion
- Machines
- Optics
- Number Systems
- Number Conversion
- Number Types
- Roots
- Angles and Parallels
- Triangle Ratios
- Triangle Angles
- Percentages
- Ratios
- Fractions
- Vectors
- Circle Angles
- Laws
- Algebra 0
- Algebra 1
- Algebra 2
- Mathematical Rules
- Powers and Indices
- Simplifying
- Linear Equations
- Graphing
- Slope and Translation
- Curves and Angle Conversion