DP Physics (first assessment 2025)

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Question 20N.1A.SL.TZ0.7

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.1A.SL.TZ0.7
Level SL Paper 1A Time zone TZ0
Command term Question number 7 Adapted from N/A
7.
[Maximum mark: 1]
20N.1A.SL.TZ0.7

Three forces act on a block which is sliding down a slope at constant speed. W is the weight, R is the reaction force at the surface of the block and F is the friction force acting on the block.

In this situation

A.  there must be an unbalanced force down the plane.

B.  W=R.

C.  F=W.

D.  the resultant force on the block is zero.

[1]

Markscheme

D

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