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Question 18N.2.HL.TZ0.b.iii

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Date November 2018 Marks available [Maximum mark: 2] Reference code 18N.2.HL.TZ0.b.iii
Level HL Paper 2 Time zone TZ0
Command term Explain Question number b.iii Adapted from N/A
b.iii.
[Maximum mark: 2]
18N.2.HL.TZ0.b.iii

A chicken’s egg of mass 58 g is dropped onto grass from a height of 1.1 m. Assume that air resistance is negligible and that the egg does not bounce or break.

Explain why the egg is likely to break when dropped onto concrete from the same height.

[2]

Markscheme

ALTERNATIVE 1:

concrete reduces the stopping time/distance ✔

impulse/change in momentum same so force greater

OR

work done same so force greater ✔

 

ALTERNATIVE 2:

concrete reduces the stopping time ✔

deceleration is greater so force is greater ✔

 

Allow reverse argument for grass.

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