DP Physics (first assessment 2025)

Question EXE.2.HL.TZ0.3c

Date	Example questions Example questions	Marks available	[Maximum mark: 4]	Reference code	EXE.2.HL.TZ0.3c
Level	HL	Paper	2	Time zone	TZ0
Command term	Predict	Question number	c	Adapted from	N/A

[Maximum mark: 4]

EXE.2.HL.TZ0.3c

(c)

Predict whether the collision is elastic.

[4]

Markscheme

Initial kinetic energy $= \frac{1}{2} m {(2.0)}^{2} = 2.0 (m)$

Final kinetic energy $= \frac{1}{2} m ({(1.0)}^{2} + {(0.71)}^{2} + {(1.3)}^{2})$ ✓

$1.6 (m)$ ✓

Final energy is less than the initial energy hence inelastic ✓

Syllabus sections