Forces and Motion (Lesson 1 - Speed and Velocity)
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Displacement
The distance from the start and end of an journey in a straight line with a described direction
Distance
How far an object moves. Doesn’t involved direction
Scalar
An quantity that only magnitude (size)
Speed
The distance travelled in a known time period
Vector
An quantity that has both magnitude (size) and direction
Velocity
The speed of an object in a particular direction
What type of quantity is Speed
Scalar
What type of quantity is Velocity
Vector
Typical Walking Speed
1.5 m/s
Typical Running Speed
3 m/s
Typical Cycling Speed
6 m/s
Typical Sound Speed
330 m/s
Typical Light Speed
300,000,000 m/s
What type of quantity is Distance
Scalar
What type of quantity is Displacement
Vector
Standard Unit for Speed
m/s