---
title: A swing is fastest at the bottom and slowest at the top, and a rolle… — Swings and pendulums · tree and pragmatics
description: A swing is fastest at the bottom and slowest at the top, and a roller coaster swaps height and speed the same way. Who acts: swing, roller coaster. A sentence of the lesson «Swings and pendulums» of the physics course of Mova's primary school with its dependency tree and the pragmatics of every clau
---

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# Swings and pendulums, sentence 12

<!-- .ven lang=en -->
A swing is fastest at the bottom and slowest at the top, and a roller coaster swaps height and speed the same way.

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**Who acts:** swing, roller coaster · **What happens:** be, swap · **To what, where:** bottom, top, height

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This is a sentence of the lesson «Swings and pendulums» 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 (swing, roller coaster), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:010-swings-and-pendulums.lesson:12
# text = A swing is fastest at the bottom and slowest at the top, and a roller coaster swaps height and speed the same way.
# source = school lesson (ours)
# course = physics
# lesson = 010-swings-and-pendulums.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	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	swing	swing	NOUN	NN	Number=Sing	4	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	fastest	fast	ADJ	JJS	Degree=Sup	0	root	_	_
5	at	at	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	bottom	bottom	NOUN	NN	Number=Sing	4	obl	_	_
8	and	and	CCONJ	CC	_	9	cc	_	_
9	slowest	slow	ADJ	JJS	Degree=Sup	4	conj	_	_
10	at	at	ADP	IN	_	12	case	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
12	top	top	NOUN	NN	Number=Sing	9	obl	_	_
13	,	,	PUNCT	,	_	18	punct	_	_
14	and	and	CCONJ	CC	_	18	cc	_	_
15	a	a	DET	DT	Definite=Ind|PronType=Art	17	det	_	_
16	roller	roller	NOUN	NN	Number=Sing	17	compound	_	_
17	coaster	coaster	NOUN	NN	Number=Sing	18	nsubj	_	_
18	swaps	swap	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	_
19	height	height	NOUN	NN	Number=Sing	18	obj	_	_
20	and	and	CCONJ	CC	_	21	cc	_	_
21	speed	speed	NOUN	NN	Number=Sing	19	conj	_	_
22	the	the	DET	DT	Definite=Def|PronType=Art	24	det	_	_
23	same	same	ADJ	JJ	Degree=Pos	24	amod	_	_
24	way	way	NOUN	NN	Number=Sing	18	obl	_	_
25	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | a swing |  |  | the bottom |  | fast *property* | tree rules |
| 2 | **be** |  | a swing *not said here* |  |  | the top |  |  | tree rules |
| 3 | **swap** | present | a roller coaster | height and speed |  |  |  | the same way *obl* | vn exchange-13.6.1 «NP V NP»: agent=Agent height=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:010-swings-and-pendulums.lesson:12`.

**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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