---
title: Where there is little friction, motion lasts: a curling stone or a s… — Rockets, record speeds and motion everywhere · tree and pragmatics
description: Where there is little friction, motion lasts: a curling stone or a skateboard on a smooth path rolls on and on after one push. Who acts: little friction, motion, curling stone. A sentence of the lesson «Rockets, record speeds and motion everywhere» of the physics course of Mova's primary school with
---

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# Rockets, record speeds and motion everywhere, sentence 4

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Where there is little friction, motion lasts: a curling stone or a skateboard on a smooth path rolls on and on after one push.

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**Who acts:** little friction, motion, curling stone · **What happens:** be, last, roll

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This is a sentence of the lesson «Rockets, record speeds and motion everywhere» of the physics course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (little friction, motion, curling stone), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:038-rockets-record-speeds-and-motion-everywhere.lesson:4
# text = Where there is little friction, motion lasts: a curling stone or a skateboard on a smooth path rolls on and on after one push.
# source = school lesson (ours)
# course = physics
# lesson = 038-rockets-record-speeds-and-motion-everywhere.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change
1	Where	where	ADV	WRB	PronType=Rel	3	advmod	_	_
2	there	there	PRON	EX	PronType=Dem	3	expl	_	_
3	is	be	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	advcl	_	_
4	little	little	ADJ	JJ	Degree=Pos	5	amod	_	_
5	friction	friction	NOUN	NN	Number=Sing	3	nsubj	_	_
6	,	,	PUNCT	,	_	3	punct	_	_
7	motion	motion	NOUN	NN	Number=Sing	8	nsubj	_	_
8	lasts	last	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
9	:	:	PUNCT	:	_	12	punct	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
11	curling	curl	NOUN	NN	Number=Sing	12	compound	_	_
12	stone	stone	NOUN	NN	Number=Sing	20	nsubj	_	_
13	or	or	CCONJ	CC	_	15	cc	_	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	_	_
15	skateboard	skateboard	NOUN	NN	Number=Sing	12	conj	_	_
16	on	on	ADP	IN	_	19	case	_	_
17	a	a	DET	DT	Definite=Ind|PronType=Art	19	det	_	_
18	smooth	smooth	ADJ	JJ	Degree=Pos	19	amod	_	_
19	path	path	NOUN	NN	Number=Sing	15	nmod	_	_
20	rolls	roll	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	parataxis	_	_
21	on	on	ADV	RB	_	20	advmod	_	_
22	and	and	CCONJ	CC	_	23	cc	_	_
23	on	on	ADV	RB	_	21	conj	_	_
24	after	after	ADP	IN	_	26	case	_	_
25	one	one	NUM	CD	NumForm=Word|NumType=Card	26	nummod	_	_
26	push	push	NOUN	NN	Number=Sing	20	obl	_	_
27	.	.	PUNCT	.	_	8	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **be** | present | little friction |  |  | there |  |  | vn exist-47.1 «NP V»: agent=Theme |
| 2 | **last** | present | motion |  |  |  |  |  | vn cost-54.2 «NP V NP.value»: agent=Theme |
| 3 | **roll** | present | a curling stone or a skateboard on a smooth path |  |  |  | after one push |  | vn run-51.3.2-2 «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.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:physics:038-rockets-record-speeds-and-motion-everywhere.lesson:4`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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