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Question 19N.2.SL.TZ0.4c

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Date November 2019 Marks available [Maximum mark: 2] Reference code 19N.2.SL.TZ0.4c
Level SL Paper 2 Time zone TZ0
Command term Explain Question number c Adapted from N/A
c.
[Maximum mark: 2]
19N.2.SL.TZ0.4c
(c)

Explain why the kinetic energy of the proton is constant.

[2]

Markscheme

ALTERNATIVE 1
work done by force is change in kinetic energy ✔
work done is zero/force perpendicular to velocity ✔

NOTE: Award [2] for a reference to work done is zero hence Ek remains constant

 

ALTERNATIVE 2
proton moves at constant speed ✔
kinetic energy depends on speed ✔

NOTE: Accept mention of speed or velocity indistinctly in MP2

 

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