---
title: A falling object speeds up every second because gravity keeps pullin… — Alice's fall and her sizes: falling, the centre… · tree and pragmatics
description: A falling object speeds up every second because gravity keeps pulling it; only air pushing back slows it, which is why a parachute falls gently and a stone does not. Who acts: falling object, gravity, air, stone. A sentence of the lesson «Alice's fall and her sizes: falling, the centre of the Earth,
---

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# Alice's fall and her sizes: falling, the centre of the Earth, giants and tiny people, sentence 7

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A falling object speeds up every second because gravity keeps pulling it; only air pushing back slows it, which is why a parachute falls gently and a stone does not.

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**Who acts:** falling object, gravity, air, stone · **What happens:** fall, speed up, keep, pull, push back, slow · **To what, where:** gravity

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This is a sentence of the lesson «Alice's fall and her sizes: falling, the centre of the Earth, giants and tiny people» 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 (falling object, gravity, air, stone), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:041-alice-s-fall-and-sizes-falling-the-centre-of-the-earth-giants-and-tiny-people.lesson:7
# text = A falling object speeds up every second because gravity keeps pulling it; only air pushing back slows it, which is why a parachute falls gently and a stone does not.
# source = school lesson (ours)
# course = physics
# lesson = 041-alice-s-fall-and-sizes-falling-the-centre-of-the-earth-giants-and-tiny-people.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): R5-strong ×3, R7-rel-agree ×3
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	falling	fall	VERB	VBG	Tense=Pres|VerbForm=Part	3	amod	_	Agree=R7-rel-agree|Haiku=3:compound|HaikuPos=NOUN:NN:Number=Sing
3	object	object	NOUN	NN	Number=Sing	4	nsubj	_	_
4	speeds	speed	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	up	up	ADP	RP	_	4	compound:prt	_	_
6	every	every	DET	DT	PronType=Tot	7	det	_	_
7	second	second	NOUN	NN	Number=Sing	4	obl:unmarked	_	_
8	because	because	SCONJ	IN	_	10	mark	_	Agree=R5-strong|Haiku=11:mark
9	gravity	gravity	NOUN	NN	Number=Sing	10	nsubj	_	Agree=R7-rel-agree|Haiku=10:compound
10	keeps	keep	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	advcl	_	Agree=R5-strong|Haiku=11:nsubj
11	pulling	pull	VERB	VBG	Tense=Pres|VerbForm=Part	10	xcomp	_	Agree=R5-strong|Haiku=4:advcl
12	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	11	obj	_	_
13	;	;	PUNCT	:	_	15	punct	_	_
14	only	only	ADV	RB	_	15	advmod	_	_
15	air	air	NOUN	NN	Number=Sing	18	nsubj	_	_
16	pushing	push	VERB	VBG	Tense=Pres|VerbForm=Part	15	acl	_	_
17	back	back	ADV	RB	_	16	advmod	_	_
18	slows	slow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	parataxis	_	Agree=R7-rel-agree|Haiku=4:conj
19	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	18	obj	_	_
20	,	,	PUNCT	,	_	26	punct	_	_
21	which	which	PRON	WDT	PronType=Rel	26	nsubj	_	_
22	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	23	cop	_	_
23	why	why	ADV	WRB	PronType=Int	26	advmod	_	_
24	a	a	DET	DT	Definite=Ind|PronType=Art	25	det	_	_
25	parachute	parachute	NOUN	NN	Number=Sing	26	nsubj	_	_
26	falls	fall	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	18	conj	_	_
27	gently	gently	ADV	RB	_	26	advmod	_	_
28	and	and	CCONJ	CC	_	31	cc	_	_
29	a	a	DET	DT	Definite=Ind|PronType=Art	30	det	_	_
30	stone	stone	NOUN	NN	Number=Sing	31	nsubj	_	_
31	does	do	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	18	conj	_	_
32	not	not	PART	RB	Polarity=Neg	31	advmod	_	_
33	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- 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 | **fall** | gerund |  |  |  |  |  |  | vn occur-48.3 «NP V»: agent=Theme |
| 2 | **speed up** | present | a falling object |  |  |  | second |  | vn run-51.3.2-2 «NP V»: agent=Theme |
| 3 | **keep** | present | gravity |  |  |  |  |  | tree rules |
| 4 | **pull** | gerund | gravity *not said here* | gravity |  |  |  |  | vn push-12-1 «NP V NP»: agent=Agent it=Theme |
| 5 | **push back** | gerund | air *not said here* |  |  |  |  |  | vn push-12-1-1 «NP V PP»: agent=Agent |
| 6 | **slow** | present | air | gravity |  |  |  |  | vn other\_cos-45.4 «NP V NP.patient»: agent=Agent it=Patient |
| 7 | **is** | present |  |  |  |  |  | why *property* | tree rules |
| 8 | **fall** | present |  |  |  |  |  | gently *property* | vn occur-48.3 «NP V»: agent=Theme |
| 9 | **not** **do** | present | a stone |  |  |  |  |  | vn act-114-1 «NP V»: agent=Agent |

<!-- .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:041-alice-s-fall-and-sizes-falling-the-centre-of-the-earth-giants-and-tiny-people.lesson:7`.

**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): R5-strong ×3, R7-rel-agree ×3. **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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