Available practice: 76 of 80 marks. Parts 10(c) await marking support. Scores cover available parts only. Theory: answer each printed part. For drawings, upload a clear photo of your sketch on the supplied figure; show working and units for calculations.
Fig. 2.2 shows a rider on an electric scooter. The scooter contains a battery and a motor to drive the back wheel.
(a)(i)State the name of the energy store in the scooter battery.
Answer guidance
State A short answer. No explanation is needed, and adding one cannot earn extra marks.
[1 mark]
(a)(ii)Describe, in terms of work done, the stages of energy transfer from the battery store to the scooter’s kinetic energy.
Answer guidance
Describe Say what happens, in order. Reasons are not required unless the question also asks why.
[2 marks]
(b)The total mass of scooter and rider is 70 kg. Calculate their total kinetic energy at 4.0 m/s.
Answer guidance
Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.
[2 marks]
(c)(i)The battery is marked “energy capacity 0.35 kilowatt-hour (kW h)”. Define a kilowatt-hour.
[1 mark]
(c)(ii)The 0.35 kW h battery is fully discharged and recharged using a 70 W power supply. Calculate the time for a full recharge in hours.
Answer guidance
Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.
[2 marks]
5054/22/M/J/23Cambridge O Level Physics 5054 · May/June 2023 · Paper 2 variant 2 · Question 2