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Question 17N.2.SL.TZ0.1e.ii

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Date November 2017 Marks available [Maximum mark: 2] Reference code 17N.2.SL.TZ0.1e.ii
Level SL Paper 2 Time zone TZ0
Command term Calculate Question number e.ii Adapted from N/A
e.ii.
[Maximum mark: 2]
17N.2.SL.TZ0.1e.ii

A girl on a sledge is moving down a snow slope at a uniform speed.

The sledge, without the girl on it, now travels up a snow slope that makes an angle of 6.5˚ to the horizontal. At the start of the slope, the speed of the sledge is 4.2 m s–1. The coefficient of dynamic friction of the sledge on the snow is 0.11.

(e.ii)

Calculate the distance along the slope at which the sledge stops moving. Assume that the coefficient of dynamic friction is constant.

[2]

Markscheme

correct use of kinematics equation

distance = 4.4 or 4.0 «m»

Alternative 2

KE lost=work done against friction + GPE

distance = 4.4 or 4.0 «m»

Allow ECF from (e)(i)

Allow [1 max] for GPE missing leading to 8.2 «m»

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