Motion Unit

Magnitude

Size, amount, intensity

Vector quantities (direction)

Displacement, velocity, force, acceleration

Scalar quantities (no direction)

Distance, speed, mass, temperature

Distance

(Scalar), total distance travelled/ground covered by an object [always positive]

Displacement

(Vector), distance from start to end point, [positive/negative/zero]

Position

Variable showing location relative to an origin, (Vector: shows direction)

Origin (Reference point)

Place where the position has a value of zero [0]

Vector

A variable that gives direction information in its value

Scalar

A variable that only shows number/how much of something there is (magnitude; i.e. size)

Speed

How quickly an object moves

Speed formula

Speed= Distance / Time

Average speed formula

Total distance / Total time

Instantaneous speed

Speed of a moving object in any certain/specific given moment

Speed AND Velocity units [Distance / Time]

m/s, km/h, mph

Distance units

m, cm, km

Time units

s, min, h

Velocity [Vector]

Speed [Distance / Time] with direction

A negative velocity value means…

The object is moving backwards/left [in an outside observer's frame of reference]

Distance from velocity and time formula

Distance= Velocity x Time

Time from velocity and distance

Time= Displacement / Velocity

Velocity formula

Velocity= Displacement / Time

Speed v.s. Velocity…

Speed has no direction (e.g. 20 m/s); Velocity has direction (e.g. 20 m/s northwest)