---
title: If there were no friction at all, what would happen when you tried t… — Forces — pushes, pulls, friction and m… · tree and pragmatics
description: If there were no friction at all, what would happen when you tried to walk? Test 8 of lesson 51 «Forces — pushes, pulls, friction and magnets» 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.
---

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# Test 8 · Forces — pushes, pulls, friction and magnets

<!-- .ven lang=en -->
If there were no friction at all, what would happen when you tried to walk?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** friction, you · **What happens:** be, happen, try, walk

<!-- .vabout -->
This is test 8 of lesson 51 «Forces — pushes, pulls, friction and magnets» 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/51-forces/#t8).

## The question {#question}

```conllu
# sent_id = question:world:51-forces:t8:1
# text = If there were no friction at all, what would happen when you tried to walk?
1	If	if	SCONJ	IN	_	3	mark	_	_
2	there	there	PRON	EX	PronType=Dem	3	expl	_	_
3	were	be	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	11	advcl	_	_
4	no	no	DET	DT	PronType=Neg	5	det	_	_
5	friction	friction	NOUN	NN	Number=Sing	3	nsubj	_	_
6	at	at	ADP	IN	_	7	case	_	_
7	all	all	DET	DT	PronType=Tot	5	nmod	_	SpaceAfter=No
8	,	,	PUNCT	,	_	3	punct	_	_
9	what	what	PRON	WP	PronType=Int	11	nsubj	_	_
10	would	would	AUX	MD	VerbForm=Fin	11	aux	_	_
11	happen	happen	VERB	VB	VerbForm=Inf	0	root	_	_
12	when	when	ADV	WRB	PronType=Int	14	advmod	_	_
13	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	14	nsubj	_	_
14	tried	try	VERB	VBD	Mood=Ind|Number=Sing|Person=2|Tense=Past|VerbForm=Fin	11	advcl	_	_
15	to	to	PART	TO	_	16	mark	_	_
16	walk	walk	VERB	VB	VerbForm=Inf	14	xcomp	_	SpaceAfter=No
17	?	?	PUNCT	.	_	11	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **be** *a condition, not said to happen* | past | no friction at all |  |  | there |  |  | vn exist-47.1 «NP V»: agent=Theme |
| 2 | **happen** | would |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 3 | **try** | past | you |  |  |  |  |  | vn try-61.1 «NP V S\_INF»: agent=Agent clause=Eventuality |
| 4 | **walk** *not said to happen* | to-infinitive | you *not said here* |  |  |  |  |  | vn run-51.3.2-2-1 «NP V»: agent=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.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
You would float up into the air

```conllu
# sent_id = question:world:51-forces:t8:o1:1
# text = You would float up into the air
1	You	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	float	float	VERB	VB	VerbForm=Inf	0	root	_	_
4	up	up	ADP	RP	_	3	compound:prt	_	_
5	into	into	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	air	air	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **float up** | would | You |  |  | the air |  |  | vn run-51.3.2-2 «NP V PP.location»: agent=Theme into air=Destination |

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Your feet would slip and you could not move forward

```conllu
# sent_id = question:world:51-forces:t8:o2:1
# text = Your feet would slip and you could not move forward
1	Your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	feet	foot	NOUN	NNS	Number=Plur	4	nsubj	_	_
3	would	would	AUX	MD	VerbForm=Fin	4	aux	_	_
4	slip	slip	VERB	VB	VerbForm=Inf	0	root	_	_
5	and	and	CCONJ	CC	_	9	cc	_	_
6	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	9	nsubj	_	_
7	could	could	AUX	MD	VerbForm=Fin	9	aux	_	_
8	not	not	PART	RB	Polarity=Neg	9	advmod	_	_
9	move	move	VERB	VB	VerbForm=Inf	4	conj	_	_
10	forward	forward	ADV	RB	_	9	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **slip** | would | Your feet |  |  |  |  |  | vn calibratable\_cos-45.6.1-1 «NP.attribute V»: agent=Attribute |
| 2 | **not** **move forward** | could | you |  |  |  |  | forward *property* | vn roll-51.3.1 «NP.theme V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
You would walk much faster than before, without effort

```conllu
# sent_id = question:world:51-forces:t8:o3:1
# text = You would walk much faster than before, without effort
1	You	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	walk	walk	VERB	VB	VerbForm=Inf	0	root	_	_
4	much	much	ADV	RB	_	5	advmod	_	_
5	faster	fast	ADV	RBR	Degree=Cmp	3	advmod	_	_
6	than	than	ADP	IN	_	7	case	_	_
7	before	before	ADV	RB	_	5	obl	_	SpaceAfter=No
8	,	,	PUNCT	,	_	10	punct	_	_
9	without	without	ADP	IN	_	10	case	_	_
10	effort	effort	NOUN	NN	Number=Sing	3	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **walk** | would | You |  |  |  |  | fast *property* | vn run-51.3.2-2-1 «NP V»: agent=Theme |

### Option 4 {#o4}

<!-- .ven lang=en -->
Nothing would change at all

```conllu
# sent_id = question:world:51-forces:t8:o4:1
# text = Nothing would change at all
1	Nothing	nothing	PRON	NN	Number=Sing|PronType=Neg	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	change	change	VERB	VB	VerbForm=Inf	0	root	_	_
4	at	at	ADP	IN	_	5	case	_	_
5	all	all	DET	DT	PronType=Tot	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **change** | would | Nothing |  |  | all |  |  | vn dress-41.1.1-1-1 «NP V»: 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: [Forces — pushes, pulls, friction and m…, test 7](https://md.mova.elamur.ai/free/en/corpora/questions/world/51-forces/t7/)
- next →: [Forces — pushes, pulls, friction and m…, test 9](https://md.mova.elamur.ai/free/en/corpora/questions/world/51-forces/t9/)
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