---
title: A ball dropped on a smooth train lands at your feet because it was a… — Speed: fast and slow · tree and pragmatics
description: A ball dropped on a smooth train lands at your feet because it was already moving with the train. Who acts: ball. A sentence of the lesson «Speed: fast and slow» of the physics course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Speed: fast and slow, sentence 9

<!-- .ven lang=en -->
A ball dropped on a smooth train lands at your feet because it was already moving with the train.

<!-- .vintro -->
**Who acts:** ball · **What happens:** drop, land, move · **To what, where:** ball, smooth train, feet

<!-- .vabout -->
This is a sentence of the lesson «Speed: fast and slow» 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 (ball), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:036-speed-fast-and-slow.lesson:9
# text = A ball dropped on a smooth train lands at your feet because it was already moving with the train.
# source = school lesson (ours)
# course = physics
# lesson = 036-speed-fast-and-slow.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	ball	ball	NOUN	NN	Number=Sing	8	nsubj	_	_
3	dropped	drop	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	2	acl	_	_
4	on	on	ADP	IN	_	7	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	smooth	smooth	ADJ	JJ	Degree=Pos	7	amod	_	_
7	train	train	NOUN	NN	Number=Sing	3	obl	_	_
8	lands	land	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
9	at	at	ADP	IN	_	11	case	_	_
10	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	11	nmod:poss	_	_
11	feet	foot	NOUN	NNS	Number=Plur	8	obl	_	_
12	because	because	SCONJ	IN	_	16	mark	_	_
13	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	16	nsubj	_	_
14	was	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	16	aux	_	_
15	already	already	ADV	RB	_	16	advmod	_	_
16	moving	move	VERB	VBG	Tense=Pres|VerbForm=Part	8	advcl	_	_
17	with	with	ADP	IN	_	19	case	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	19	det	_	_
19	train	train	NOUN	NN	Number=Sing	16	obl	_	_
20	.	.	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 | **drop** | participle |  | a ball *not said here* |  | a smooth train |  |  | vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme on train=Trajectory |
| 2 | **land** | present | a ball |  |  | your feet |  |  | vn pocket-9.10-1 «NP V»: agent=Theme |
| 3 | **move** | past · progressive | ball |  |  |  |  | with the train | vn roll-51.3.1 «NP.theme 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:036-speed-fast-and-slow.lesson:9`.

**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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- ← previous: [Speed: fast and slow, 8](https://md.mova.elamur.ai/free/en/corpora/school/physics/36-speed-fast-and-slow/8/)
- next →: [Speed: fast and slow, 10](https://md.mova.elamur.ai/free/en/corpora/school/physics/36-speed-fast-and-slow/10/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/physics/36-speed-fast-and-slow/)