---
title: A cyclist squeezes the brakes. How do the brakes stop the bike? — Pushes, pulls, friction and wheels · tree and pragmatics
description: A cyclist squeezes the brakes. How do the brakes stop the bike? Test 4 · ★ of lesson 85 «Pushes, pulls, friction and wheels» of the world course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/world/85-pushes-pulls-friction-wheels/t4/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [questions](https://md.mova.elamur.ai/free/en/corpora/questions/) / [World](https://md.mova.elamur.ai/free/en/corpora/questions/world/) / [Pushes, pulls, friction and wheels](https://md.mova.elamur.ai/free/en/corpora/questions/world/85-pushes-pulls-friction-wheels/) / t4

# Test 4 · ★ · Pushes, pulls, friction and wheels

<!-- .ven lang=en -->
A cyclist squeezes the brakes. How do the brakes stop the bike?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** cyclist, brakes · **What happens:** squeeze, do, stop · **To what, where:** brakes, bike

<!-- .vabout -->
This is test 4 · ★ of lesson 85 «Pushes, pulls, friction and wheels» of the world 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/world/85-pushes-pulls-friction-wheels/#t4).

## The question {#question}

<!-- .note -->
*Sentence 1:* A cyclist squeezes the brakes.

```conllu
# sent_id = question:world:85-pushes-pulls-friction-wheels:t4:1
# text = A cyclist squeezes the brakes.
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	cyclist	cyclist	NOUN	NN	Number=Sing	3	nsubj	_	_
3	squeezes	squeeze	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	brakes	brake	NOUN	NNS	Number=Plur	3	obj	_	SpaceAfter=No
6	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **squeeze** | present | a cyclist | the brakes |  |  |  |  | vn push-12-1-1 «NP V NP»: agent=Agent brake=Theme |

<!-- .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.

<!-- .note -->
*Sentence 2:* How do the brakes stop the bike?

```conllu
# sent_id = question:world:85-pushes-pulls-friction-wheels:t4:2
# text = How do the brakes stop the bike?
1	How	how	ADV	WRB	PronType=Int	2	advmod	_	_
2	do	do	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	5	advcl	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	brakes	brake	NOUN	NNS	Number=Plur	5	nsubj	_	_
5	stop	stop	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	bike	bike	NOUN	NN	Number=Sing	5	obj	_	SpaceAfter=No
8	?	?	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **do** | present | the brakes *not said here* |  |  |  |  |  | vn act-114-1 «NP V»: agent=Agent |
| 2 | **stop** | present | the brakes | the bike |  |  |  |  | vn stop-55.4-1-1 «NP V NP.eventuality»: agent=Subeventuality bike=Eventuality |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
They make the bike heavier

```conllu
# sent_id = question:world:85-pushes-pulls-friction-wheels:t4:o1:1
# text = They make the bike heavier
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	_	_
2	make	make	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	bike	bike	NOUN	NN	Number=Sing	2	obj	_	_
5	heavier	heavy	ADJ	JJR	Degree=Cmp	2	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | They | the bike |  |  |  | heavy *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset bike=Product |

### Option 2 {#o2}

<!-- .ven lang=en -->
They let all the air out of both of the tyres

```conllu
# sent_id = question:world:85-pushes-pulls-friction-wheels:t4:o2:1
# text = They let all the air out of both of the tyres
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	_	_
2	let	let	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
3	all	all	DET	PDT	PronType=Tot	5	det:predet	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	air	air	NOUN	NN	Number=Sing	2	obj	_	_
6	out	out	ADP	IN	_	8	case	_	_
7	of	of	ADP	IN	_	8	case	_	_
8	both	both	DET	DT	PronType=Tot	2	obl	_	_
9	of	of	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	tyres	tyre	NOUN	NNS	Number=Plur	8	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **let** | past | They | all air |  | both |  |  | vn give-13.1-1 «NP V NP»: agent=Agent air=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
They push the wheel forwards faster

```conllu
# sent_id = question:world:85-pushes-pulls-friction-wheels:t4:o3:1
# text = They push the wheel forwards faster
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	_	_
2	push	push	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	wheel	wheel	NOUN	NN	Number=Sing	2	obj	_	_
5	forwards	forwards	ADV	RB	_	2	advmod	_	_
6	faster	fast	ADV	RBR	Degree=Cmp	2	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **push** | present | They | the wheel |  |  |  | fast, forwards *property* | vn carry-11.4-1-1 «NP V NP»: agent=Agent wheel=Theme |

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

<!-- .ven lang=en -->
They rub on the wheel and make friction

```conllu
# sent_id = question:world:85-pushes-pulls-friction-wheels:t4:o4:1
# text = They rub on the wheel and make friction
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	_	_
2	rub	rub	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	on	on	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	wheel	wheel	NOUN	NN	Number=Sing	2	obl	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	make	make	VERB	VB	VerbForm=Inf	2	conj	_	_
8	friction	friction	NOUN	NN	Number=Sing	7	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **rub** | present | They |  |  | the wheel |  |  | vn spray-9.7-1 «NP V PP.destination»: agent=Theme on wheel=Destination |
| 2 | **make** | infinitive | They *not said here* | friction |  |  |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset friction=Product |

<!-- div src -->

**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.

<!-- /div -->

<!-- pn -->
- ← previous: [Pushes, pulls, friction and wheels, test 3](https://md.mova.elamur.ai/free/en/corpora/questions/world/85-pushes-pulls-friction-wheels/t3/)
- next →: [Pushes, pulls, friction and wheels, test 5](https://md.mova.elamur.ai/free/en/corpora/questions/world/85-pushes-pulls-friction-wheels/t5/)
- ↑ back to [Pushes, pulls, friction and wheels](https://md.mova.elamur.ai/free/en/corpora/questions/world/85-pushes-pulls-friction-wheels/)