Physics 9702/23 — May/June 2016

Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme

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Topics Physical Quantities and Units · Kinematics · Work, Energy and Power · Forces, Density and Pressure · Dynamics · Electricity · +4 more

Q1Physical Quantities and UnitsKinematicsFree sample

(a)

A list of quantities that are either scalars or vectors is shown in Fig. 1.1.

Fig. 1.1

Complete Fig. 1.1 to indicate whether each quantity is a scalar or a vector.

One line has been completed as an example.

(b)

A girl runs $120\ \text{m}$ due north in $15\ \text{s}$ . She then runs $80\ \text{m}$ due east in $12\ \text{s}$ .

(i)

Sketch a vector diagram to show the path taken by the girl. Draw and label her resultant displacement $R$ .

Fig. 1.2

(ii)

Calculate, for the girl,

average speed = ______ $\text{m s}^{-1}$

the magnitude of the average velocity $v$ and its angle with respect to the direction of the initial path.

magnitude of $v$ = ______ $\text{m s}^{-1}$
angle = ______ $^{\circ}$

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