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Question 20N.1.HL.TZ0.5

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.1.HL.TZ0.5
Level HL Paper 1 Time zone TZ0
Command term Question number 5 Adapted from N/A
5.
[Maximum mark: 1]
20N.1.HL.TZ0.5

A car is driven from rest along a straight horizontal road. The car engine exerts a constant driving force. Friction and air resistance are negligible. How does the power developed by the engine change with the distance travelled?

A.  Power does not change.

B.  Power decreases linearly.

C.  Power increases linearly.

D.  Power increases non-linearly.

[1]

Markscheme

D

Examiners report

Lowish discrimination with C the most popular choice. It was felt that candidates normally analyse in terms of the time taken whereas this question refers to the distance travelled so with a constant driving force the velocity increases linearly with time but non linearly with distance.

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