DP Physics (first assessment 2025)

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Question 23M.2.SL.TZ1.1bi

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Date May 2023 Marks available [Maximum mark: 4] Reference code 23M.2.SL.TZ1.1bi
Level SL Paper 2 Time zone TZ1
Command term Show Question number i Adapted from N/A
i.
[Maximum mark: 4]
23M.2.SL.TZ1.1bi
(i)

Show that the collision is elastic.

[4]

Markscheme

Use of conservation of momentum. ✓
Rebound speed = 2.16 «m s−1» ✓
Calculation of initial KE = «12 × 0.800 × 4.3172» = 7.46 « J » ✓
Calculation of final KE = «12 × 0.800  × 2.162 + 12 × 2.40 × 2.162» = 7.46 «J» ✓
«hence elastic»