G481 Motion

Seite 1

G481 Motion

1.1.1 Physical Quantities and Units

(a) some physical quantities consist of a numerical magnitude and a unit

(b) use correctly the named units listed in this specification

(c) use correctly the following prefixes and their symbols

(d) make suitable estimates of physical quantities included within this specification

Prefixes and their Symbols

1.1.2 Scalars and Vectors

(a) define scalar and vector quantities and give examples

Scalar = Consists only of magnitude

Vector = Has both magnitude and direction

(b) draw and use a vector triangle to determine the resultant of 2 coplanar vectors such as displacement, velocity and force

(c) calculate the resultant of 2 perpendicular vectors such as displacement, velocity and force

(d) resolve a vector such as displacement, velocity and force into two perpendicular components

Prefixes