---
title: bro said if u drop a ball on a moving train it'll fly to the back. t… — Speed: fast and slow · tree and pragmatics
description: bro said if u drop a ball on a moving train it'll fly to the back. true?? Test 1 of lesson 36 «Speed: fast and slow» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 1 · Speed: fast and slow

<!-- .ven lang=en -->
bro said if u drop a ball on a moving train it'll fly to the back. true??

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** bro, u · **What happens:** say, drop, move, fly · **To what, where:** ball, moving train, back · **Speech:** someone speaks here

<!-- .vabout -->
This is test 1 of lesson 36 «Speed: fast and slow» of the physics course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/physics/36-speed-fast-and-slow/#t1).

## The question {#question}

```conllu
# sent_id = question:physics:36-speed-fast-and-slow:t1:1
# text = bro said if u drop a ball on a moving train it'll fly to the back. true??
1	bro	bro	NOUN	NN	Number=Sing	2	nsubj	_	_
2	said	say	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
3	if	if	SCONJ	IN	_	5	mark	_	_
4	u	you	PRON	PRP	Abbr=Yes|Case=Nom|Person=2|PronType=Prs	5	nsubj	_	_
5	drop	drop	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	2	ccomp	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	ball	ball	NOUN	NN	Number=Sing	5	obj	_	_
8	on	on	ADP	IN	_	11	case	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
10	moving	move	VERB	VBG	VerbForm=Ger	11	amod	_	_
11	train	train	NOUN	NN	Number=Sing	5	obl	_	_
12	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	14	nsubj	_	SpaceAfter=No
13	'll	will	AUX	MD	VerbForm=Fin	14	aux	_	_
14	fly	fly	VERB	VB	VerbForm=Inf	11	acl:relcl	_	_
15	to	to	ADP	IN	_	17	case	_	_
16	the	the	DET	DT	Definite=Def|PronType=Art	17	det	_	_
17	back	back	NOUN	NN	Number=Sing	14	obl	_	SpaceAfter=No
18	.	.	PUNCT	.	_	2	punct	_	_
19	true	true	ADJ	JJ	Degree=Pos	2	ccomp	_	SpaceAfter=No
20	??	??	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **say** *speech: assert* | past | bro |  |  |  |  |  | vn say-37.7-1-1 «NP V how S»: agent=Agent clause=Topic |
| 2 | **drop** *a condition, not said to happen* | present | u | a ball |  | a moving train |  |  | vn put\_direction-9.4 «NP V NP PP.destination»: agent=Agent ball=Theme on train=Destination |
| 3 | **move** | gerund |  |  |  |  |  |  | vn roll-51.3.1 «NP.theme V»: agent=Theme |
| 4 | **fly** | future | bro | a moving train *not said here* |  | the back |  |  | vn drive-11.5-1 «NP V NP PP.destination»: agent=Agent train=Theme to back=Destination |

<!-- .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.

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
No, it lands at your feet; it is moving with the train

```conllu
# sent_id = question:physics:36-speed-fast-and-slow:t1:o1:1
# text = No, it lands at your feet; it is moving with the train
1	No	no	INTJ	UH	Polarity=Neg	4	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	4	punct	_	_
3	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
4	lands	land	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	at	at	ADP	IN	_	7	case	_	_
6	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	7	nmod:poss	_	_
7	feet	foot	NOUN	NNS	Number=Plur	4	obl	_	SpaceAfter=No
8	;	;	PUNCT	,	_	11	punct	_	_
9	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	11	nsubj	_	_
10	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	aux	_	_
11	moving	move	VERB	VBG	Tense=Pres|VerbForm=Part	4	advcl	_	_
12	with	with	ADP	IN	_	14	case	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	train	train	NOUN	NN	Number=Sing	11	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **land** | present | it |  |  | your feet |  |  | vn pocket-9.10-1 «NP V»: agent=Theme |
| 2 | **move** | present · progressive | it |  |  |  |  | with the train | vn roll-51.3.1 «NP.theme V»: agent=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
Yes, it shoots backwards really fast as the train speeds on

```conllu
# sent_id = question:physics:36-speed-fast-and-slow:t1:o2:1
# text = Yes, it shoots backwards really fast as the train speeds on
1	Yes	yes	INTJ	UH	Polarity=Pos	4	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
4	shoots	shoot	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	backwards	backwards	ADV	RB	_	4	advmod	_	_
6	really	really	ADV	RB	_	7	advmod	_	_
7	fast	fast	ADV	RB	Degree=Pos	4	advmod	_	_
8	as	as	SCONJ	IN	_	11	mark	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	train	train	NOUN	NN	Number=Sing	11	nsubj	_	_
11	speeds	speed	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	advcl	_	_
12	on	on	ADP	RP	_	11	compound:prt	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **shoot** | present | it |  |  |  |  | backwards, fast *property* | vn throw-17.1-1 «NP V NP»: agent=Agent |
| 2 | **speed on** | present | the train |  |  |  |  |  | vn run-51.3.2-2 «NP V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
No, it floats in the air

```conllu
# sent_id = question:physics:36-speed-fast-and-slow:t1:o3:1
# text = No, it floats in the air
1	No	no	INTJ	UH	Polarity=Neg	4	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	4	punct	_	_
3	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
4	floats	float	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	in	in	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	air	air	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **float** | present | it |  |  | the air |  |  | vn run-51.3.2-2 «NP V PP.location»: agent=Theme in air=Trajectory |

### Option 4 {#o4}

<!-- .ven lang=en -->
Yes, the train moves away from it

```conllu
# sent_id = question:physics:36-speed-fast-and-slow:t1:o4:1
# text = Yes, the train moves away from it
1	Yes	yes	INTJ	UH	Polarity=Pos	5	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	train	train	NOUN	NN	Number=Sing	5	nsubj	_	_
5	moves	move	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	away	away	ADV	RB	_	5	advmod	_	_
7	from	from	ADP	IN	_	8	case	_	_
8	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **move away** | present | the train |  |  | it |  | away *property* | vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme from it=Trajectory |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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