Physics 5054/21 — October/November 2018

Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme

questions

marks

105

minutes

Topics Forces · Energy, Work and Power · Thermal Properties of Matter · Kinematics · Pressure · [Legacy] Temperature and Thermometry · +10 more

Q1ForcesKinematicsFree sample

A girl of mass $35\text{ kg}$ , on a bicycle, accelerates from rest and travels down a slope in a straight line. The girl does not use the pedals.

Fig. 1.1 shows that the gradient of the slope is constant.

Fig. 1.1

(a)

Calculate the resultant force on the girl when she is accelerating at $2.6\text{ m / s}^2$ .

resultant force = ______

(b)

At first, her acceleration is constant. At time $t_1$ , her acceleration starts to decrease gradually until she is travelling at a constant speed in a straight line.

(i)

On Fig. 1.2, sketch a speed-time graph for the girl from when she starts moving until she is travelling at a constant speed.

Fig. 1.2

(ii)

State how the distance travelled is found from a speed-time graph.

The rest of this paper

9 more questions

Q2Pressure5M
Q3Forces5M
Q4Energy, Work and Power · Thermal Properties of Matter6M
Q5[Legacy] Temperature and Thermometry · Thermal Properties of Matter8M
Q6Simple Magnetism and Magnetic Fields7M
Q7Electric Circuits · Current, Voltage and Resistance9M
Q8Mass, Weight and Density · Turning Effect of Forces · Forces · Energy, Work and Power15M
Q9General Properties of Waves · Electromagnetic Spectrum · Reflection and Refraction of Light15M
Q10The Nuclear Atom · Radioactivity · Energy, Work and Power15M

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