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A-Level OCR 2025 Physics B (Advancing Physics) Paper 3
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Tuesday 17 June 2025 – Morning
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A Level Physics B (Advancing Physics)
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H557/03
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Practical skills in physics
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Time allowed: 1 hours 30 minutes
1
Turn over
, 2
Section A
1 This question is about terminal velocity and drag for falling cupcake cases.
(a) A student times how long a cupcake case takes to fall though a height of 2.000 ± 0.005 m using
the equipment as shown in Fig. 1.1.
Fig. 1.1
cupcake case
metre rule
clamp stand
A light-gate timer (not shown) is used, and the measurement repeated five times. The times are
shown in Table 1.1.
Table 1.1
Time / s
1.68
1.69
1.71
1.70
1.73
(i) Determine the absolute uncertainty in the measurement of time.
Absolute uncertainty = ± ...................................................... s [1]
© OCR 2025
, 3
(ii) Calculate the average velocity of the cupcake case.
Include the uncertainty in your answer.
Give your answer to an appropriate number of significant figures.
Average velocity = ....................... ± ....................... m s–1 [3]
(b) The cupcake case will accelerate from rest to reach terminal velocity at some point during its fall.
The student is calculating the average velocity.
Comment on how the average velocity relates to the terminal velocity.
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
...................................................................................................................................................................... [3]
© OCR 2025 Turn over
Freef reru7trerrereru7rgveu876rv3 r989er8763rv3 br8r7eegve 9dwewsd 8 sdsydtfd98dsdksuy89fisbd
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A-Level OCR 2025 Physics B (Advancing Physics) Paper 3
Rtdvddvyte7gvds duytcd duytw wdydwugw iu8yegrbnff us sso987ryv3 r,o987 sdls98syv sdmskimj kiuhoiuh
Tuesday 17 June 2025 – Morning
Gffg fgfgfg rgrg jrrngr gr 4r4r r ff4r3r4r rg
A Level Physics B (Advancing Physics)
5fryyrghtyjnv t ef e e rwwrwwewew2
H557/03
Tyyfgtrtrg dmso9d8yghb cjcbc scks
Practical skills in physics
65t8u3 3uegv3r3i3oejc e3eiheve h3kk3e
Time allowed: 1 hours 30 minutes
1
Turn over
, 2
Section A
1 This question is about terminal velocity and drag for falling cupcake cases.
(a) A student times how long a cupcake case takes to fall though a height of 2.000 ± 0.005 m using
the equipment as shown in Fig. 1.1.
Fig. 1.1
cupcake case
metre rule
clamp stand
A light-gate timer (not shown) is used, and the measurement repeated five times. The times are
shown in Table 1.1.
Table 1.1
Time / s
1.68
1.69
1.71
1.70
1.73
(i) Determine the absolute uncertainty in the measurement of time.
Absolute uncertainty = ± ...................................................... s [1]
© OCR 2025
, 3
(ii) Calculate the average velocity of the cupcake case.
Include the uncertainty in your answer.
Give your answer to an appropriate number of significant figures.
Average velocity = ....................... ± ....................... m s–1 [3]
(b) The cupcake case will accelerate from rest to reach terminal velocity at some point during its fall.
The student is calculating the average velocity.
Comment on how the average velocity relates to the terminal velocity.
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
...................................................................................................................................................................... [3]
© OCR 2025 Turn over
