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Question 21N.1.HL.TZ0.5

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Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.1.HL.TZ0.5
Level HL Paper 1 Time zone TZ0
Command term Question number 5 Adapted from N/A
5.
[Maximum mark: 1]
21N.1.HL.TZ0.5

A cyclist rides up a hill of vertical height 100 m in 500 s at a constant speed. The combined mass of the cyclist and the bicycle is 80 kg. The power developed by the cyclist is 200 W. What is the efficiency of the energy transfer in this system?

 

A.  8 %

B.  20 %

C.  60 %

D.  80 %

[1]

Markscheme

D

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