---
title: A raindrop speeds up until the push of the air equals its weight, an… — Why things fall: the apple and the pull of the E… · tree and pragmatics
description: A raindrop speeds up until the push of the air equals its weight, and then it falls at a steady speed, so it does not hurt; without air, a drop from a high cloud would arrive faster than a racing car. Who acts: raindrop, push, drop, air. A sentence of the lesson «Why things fall: the apple and the p
---

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# Why things fall: the apple and the pull of the Earth, sentence 18

<!-- .ven lang=en -->
A raindrop speeds up until the push of the air equals its weight, and then it falls at a steady speed, so it does not hurt; without air, a drop from a high cloud would arrive faster than a racing car.

<!-- .vintro -->
**Who acts:** raindrop, push, drop, air · **What happens:** speed up, equal, fall, not hurt, arrive, push · **To what, where:** weight, steady speed

<!-- .vabout -->
This is a sentence of the lesson «Why things fall: the apple and the pull of the Earth» 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 (raindrop, push, drop, air), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:001-why-things-fall.lesson:18
# text = A raindrop speeds up until the push of the air equals its weight, and then it falls at a steady speed, so it does not hurt; without air, a drop from a high cloud would arrive faster than a racing car.
# source = school lesson (ours)
# course = physics
# lesson = 001-why-things-fall.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 ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	raindrop	raindrop	NOUN	NN	Number=Sing	3	nsubj	_	_
3	speeds	speed	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	up	up	ADP	RP	_	3	compound:prt	_	_
5	until	until	SCONJ	IN	_	11	mark	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	push	push	NOUN	NN	Number=Sing	11	nsubj	_	_
8	of	of	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	air	air	NOUN	NN	Number=Sing	7	nmod	_	_
11	equals	equal	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	advcl	_	_
12	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	13	nmod:poss	_	_
13	weight	weight	NOUN	NN	Number=Sing	11	obj	_	_
14	,	,	PUNCT	,	_	18	punct	_	_
15	and	and	CCONJ	CC	_	18	cc	_	_
16	then	then	ADV	RB	PronType=Dem	18	advmod	_	_
17	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	18	nsubj	_	_
18	falls	fall	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
19	at	at	ADP	IN	_	22	case	_	_
20	a	a	DET	DT	Definite=Ind|PronType=Art	22	det	_	_
21	steady	steady	ADJ	JJ	Degree=Pos	22	amod	_	_
22	speed	speed	NOUN	NN	Number=Sing	18	obl	_	_
23	,	,	PUNCT	,	_	28	punct	_	_
24	so	so	ADV	RB	_	28	advmod	_	_
25	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	28	nsubj	_	_
26	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	28	aux	_	_
27	not	not	PART	RB	Polarity=Neg	28	advmod	_	_
28	hurt	hurt	VERB	VB	VerbForm=Inf	3	conj	_	_
29	;	;	PUNCT	,	_	31	punct	_	_
30	without	without	ADP	IN	_	31	case	_	_
31	air	air	NOUN	NN	Number=Sing	40	obl	_	Agree=R5-strong|Haiku=28:obl
32	,	,	PUNCT	,	_	34	punct	_	_
33	a	a	DET	DT	Definite=Ind|PronType=Art	34	det	_	_
34	drop	drop	NOUN	NN	Number=Sing	40	nsubj	_	_
35	from	from	ADP	IN	_	38	case	_	_
36	a	a	DET	DT	Definite=Ind|PronType=Art	38	det	_	_
37	high	high	ADJ	JJ	Degree=Pos	38	amod	_	_
38	cloud	cloud	NOUN	NN	Number=Sing	34	nmod	_	_
39	would	would	AUX	MD	VerbForm=Fin	40	aux	_	_
40	arrive	arrive	VERB	VB	VerbForm=Inf	3	parataxis	_	_
41	faster	fast	ADJ	JJR	Degree=Cmp	40	xcomp	_	_
42	than	than	ADP	IN	_	45	case	_	_
43	a	a	DET	DT	Definite=Ind|PronType=Art	45	det	_	_
44	racing	racing	NOUN	NN	Number=Sing	45	compound	_	_
45	car	car	NOUN	NN	Number=Sing	41	obl	_	_
46	.	.	PUNCT	.	_	3	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 | **speed up** | present | a raindrop |  |  |  |  |  | vn run-51.3.2-2 «NP V»: agent=Theme |
| 2 | **equal** | present | the push of the air | push's weight |  |  |  |  | tree rules |
| 3 | **fall** | present | raindrop |  |  | a steady speed | then |  | vn occur-48.3 «NP V PP»: agent=Theme at speed=Location |
| 4 | **not** **hurt** | present · do-support | raindrop |  |  |  |  |  | vn amuse-31.1 «NP V NP-PRO-ARB»: agent=Stimulus |
| 5 | **arrive** | would | a drop from a high cloud |  |  |  |  | without air; fast *property* | vn escape-51.1-1 «NP V»: agent=Theme |
| 6 | **push** |  | the air |  |  |  |  |  | nom push «act intransitive»: of=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.

<!-- div src -->

**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:001-why-things-fall.lesson:18`.

**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 ×1. **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/).

<!-- /div -->

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