Physics 9702/21 — October/November 2022

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

questions

marks

minutes

Topics Physical Quantities and Units · Work, Energy and Power · Dynamics · Kinematics · Forces, Density and Pressure · Deformation of Solids · +5 more

Q1Physical Quantities and UnitsFree sample

(a)

The boxes in Fig. 1.1 contain terms on the left-hand side and examples of these terms on the right-hand side.

Draw a line between each term on the left and the correct example on the right.

Fig. 1.1

(b)

A set of experimental measurements is described as precise and not accurate.

State what is meant by:

(i)

precise

(ii)

not accurate.

(c)

An object of mass $m$ travels with speed $v$ in a circle of radius $r$ . The force $F$ acting on the object is given by

F = \frac{mv^2}{r}

The percentage uncertainties of three of the quantities are given in Table 1.1.

Table 1.1

quantity	percentage uncertainty
$F$	$\pm 3\%$
$m$	$\pm 4\%$
$r$	$\pm 5\%$

The value of $v$ is determined from $F$ , $m$ and $r$ .

(i)

Calculate the percentage uncertainty in $v$ .

percentage uncertainty = ______ %

(ii)

The value of $v$ is $15.0\ \text{m s}^{-1}$ .

Calculate the absolute uncertainty in $v$ .

absolute uncertainty = ______ $\text{m s}^{-1}$

The rest of this paper

5 more questions

Q2Kinematics · Forces, Density and Pressure · Work, Energy and Power · Deformation of Solids · Dynamics17M
Q3Work, Energy and Power · Physical Quantities and Units · Dynamics8M
Q4Waves · Superposition10M
Q5Electricity · D.C. Circuits11M
Q6Particle Physics7M

Loading the full paper…