DP Physics (first assessment 2025)

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Question 23M.2.SL.TZ1.1c

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Date May 2023 Marks available [Maximum mark: 3] Reference code 23M.2.SL.TZ1.1c
Level SL Paper 2 Time zone TZ1
Command term Estimate Question number c Adapted from N/A
c.
[Maximum mark: 3]
23M.2.SL.TZ1.1c
(c)

The coefficient of dynamic friction between the block and the rough surface is 0.400. 

Estimate the distance travelled by the block on the rough surface until it stops.

[3]

Markscheme

ALTERNATIVE 1
Frictional force is f«= 0.400 × 2.40 × 9.81» = 9.42 «N» ✓
9.42 × d = 12 × 2.40 × 2.162  OR  d = 5.59879.42✓
d = 0.594 «m» ✓

 

ALTERNATIVE 2
a = «fm = µg = 0.4 × 9.81 =» 3.924 «m s−2» ✓

Proper use of kinematics equation(s) to determine ✓

d = 0.594 «m» ✓

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