Physics 9702/22 — February/March 2023

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

questions

marks

minutes

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

Q1Physical Quantities and UnitsKinematicsFree sample

(a)

Underline all the SI base units in the following list.

ampere coulomb current kelvin newton

(b)

A toy car moves in a horizontal straight line. The displacement $s$ of the car is given by the equation

s = \frac{v^2}{2a}

where $a$ is the acceleration of the car and $v$ is its final velocity.

State two conditions that apply to the motion of the car in order for the above equation to be valid.

1 ................................................................................................................................................

2 ................................................................................................................................................

(c)

An experiment is performed to determine the acceleration of the car in (b). The following measurements are obtained:

$s = 3.89\text{ m} \pm 0.5\%$
$v = 2.75\text{ m s}^{-1} \pm 0.8\%$ .

(i)

Calculate the acceleration $a$ of the car.

$a$ = ______ $\text{m s}^{-2}$

(ii)

Determine the percentage uncertainty, to two significant figures, in $a$ .

percentage uncertainty = ______ $\%$

(iii)

Use your answers in (c)(i) and (c)(ii) to determine the absolute uncertainty in the calculated value of $a$ .

absolute uncertainty = ______ $\text{m s}^{-2}$

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6 more questions

Q2Deformation of Solids · Dynamics · Work, Energy and Power · Kinematics13M
Q3Forces, Density and Pressure · Physical Quantities and Units · Dynamics7M
Q4Work, Energy and Power · Dynamics6M
Q5Waves · Superposition10M
Q6Electricity · D.C. Circuits12M
Q7Particle Physics5M

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