---
title: Which pair has the most friction? — Friction: the grip that stops and helps · tree and pragmatics
description: Which pair has the most friction? Test 11 of lesson 6 «Friction: the grip that stops and helps» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 11 · Friction: the grip that stops and helps

<!-- .ven lang=en -->
Which pair has the most friction?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** pair · **What happens:** have · **To what, where:** friction

<!-- .vabout -->
This is test 11 of lesson 6 «Friction: the grip that stops and helps» of the physics course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/physics/6-friction-the-grip/#t11).

## The question {#question}

```conllu
# sent_id = question:physics:6-friction-the-grip:t11:1
# text = Which pair has the most friction?
1	Which	which	DET	WDT	PronType=Int	2	det	_	_
2	pair	pair	NOUN	NN	Number=Sing	3	nsubj	_	_
3	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
5	most	most	ADV	RBS	Degree=Sup	6	advmod	_	_
6	friction	friction	NOUN	NN	Number=Sing	3	obj	_	SpaceAfter=No
7	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | which pair | the friction |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent friction=Patient |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
Socks sliding on a polished floor

```conllu
# sent_id = question:physics:6-friction-the-grip:t11:o1:1
# text = Socks sliding on a polished floor
1	Socks	sock	NOUN	NNS	Number=Plur	0	root	_	_
2	sliding	slide	VERB	VBG	VerbForm=Ger	1	acl	_	_
3	on	on	ADP	IN	_	6	case	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	polished	polish	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	6	amod	_	_
6	floor	floor	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **slide** | gerund | Socks *not said here* |  |  | a polished floor |  |  | vn run-51.3.2-2 «NP V PP.location»: agent=Theme on floor=Trajectory |
| 2 | **polish** | participle |  |  |  |  |  |  | vn butter-9.9 «NP V NP.destination»: agent=Agent |

### Option 2 {#o2}

<!-- .ven lang=en -->
A sledge running on fresh snow

```conllu
# sent_id = question:physics:6-friction-the-grip:t11:o2:1
# text = A sledge running on fresh snow
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	sledge	sledge	NOUN	NN	Number=Sing	0	root	_	_
3	running	run	VERB	VBG	VerbForm=Ger	2	acl	_	_
4	on	on	ADP	IN	_	6	case	_	_
5	fresh	fresh	ADJ	JJ	Degree=Pos	6	amod	_	_
6	snow	snow	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **run** | gerund | a sledge *not said here* |  |  | fresh snow |  |  | vn run-51.3.2-2-1 «NP V PP.location»: agent=Theme on snow=Trajectory |

### Option 3 {#o3}

<!-- .ven lang=en -->
Skates gliding over smooth ice

```conllu
# sent_id = question:physics:6-friction-the-grip:t11:o3:1
# text = Skates gliding over smooth ice
1	Skates	skate	NOUN	NNS	Number=Plur	0	root	_	_
2	gliding	glide	VERB	VBG	VerbForm=Ger	1	acl	_	_
3	over	over	ADP	IN	_	5	case	_	_
4	smooth	smooth	ADJ	JJ	Degree=Pos	5	amod	_	_
5	ice	ice	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **glide** | gerund | Skates *not said here* |  |  | smooth ice |  |  | vn run-51.3.2-2 «NP V PP.location»: agent=Theme over ice=Trajectory |

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
Rubber soles on a rough path

```conllu
# sent_id = question:physics:6-friction-the-grip:t11:o4:1
# text = Rubber soles on a rough path
1	Rubber	rubber	NOUN	NN	Number=Sing	2	nsubj	_	_
2	soles	sole	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	on	on	ADP	IN	_	6	case	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	rough	rough	ADJ	JJ	Degree=Pos	6	amod	_	_
6	path	path	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **sole** | present | Rubber |  |  | a rough path |  |  | vn butter-9.9 «NP V NP.destination»: agent=Agent |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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- ← previous: [Friction: the grip that stops and helps, test 10](https://md.mova.elamur.ai/free/en/corpora/questions/physics/6-friction-the-grip/t10/)
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