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Question 23M.1.HL.TZ1.7

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1.HL.TZ1.7
Level HL Paper 1 Time zone TZ1
Command term Question number 7 Adapted from N/A
7.
[Maximum mark: 1]
23M.1.HL.TZ1.7

A block of mass 2.0 kg is placed on a trolley of mass 5.0 kg, moving horizontally. A force of 8.0 N is applied to the block which slides on the surface of the trolley. The frictional force between the trolley and the ground is zero.

The trolley accelerates at a rate of 1.0 m s−2. What is the coefficient of dynamic friction between the block and the trolley?


A.  0.05

B.  0.15

C.  0.25

D.  0.35

[1]

Markscheme

C

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