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Question 18M.1.SL.TZ2.3

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.1.SL.TZ2.3
Level SL Paper 1 Time zone TZ2
Command term Question number 3 Adapted from N/A
3.
[Maximum mark: 1]
18M.1.SL.TZ2.3

A motor of input power 160 W raises a mass of 8.0 kg vertically at a constant speed of 0.50 m s–1.

What is the efficiency of the system?

A.     0.63%

B.     25%

C.     50%

D.     100%

[1]

Markscheme

B

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