---
title: A force is a push or a pull, and it is what changes how something mo… — Pushes and pulls: what makes things move and stop · tree and pragmatics
description: A force is a push or a pull, and it is what changes how something moves. Who acts: force, it, something. A sentence of the lesson «Pushes and pulls: what makes things move and stop» of the physics course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Pushes and pulls: what makes things move and stop, sentence 5

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A force is a push or a pull, and it is what changes how something moves.

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**Who acts:** force, it, something · **What happens:** be, move · **To what, where:** push

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This is a sentence of the lesson «Pushes and pulls: what makes things move and stop» 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 (force, it, something), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:004-pushes-and-pulls-move-and-stop.lesson:5
# text = A force is a push or a pull, and it is what changes how something moves.
# source = school lesson (ours)
# course = physics
# lesson = 004-pushes-and-pulls-move-and-stop.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	force	force	NOUN	NN	Number=Sing	5	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	push	push	NOUN	NN	Number=Sing	0	root	_	_
6	or	or	CCONJ	CC	_	8	cc	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	pull	pull	NOUN	NN	Number=Sing	5	conj	_	_
9	,	,	PUNCT	,	_	14	punct	_	_
10	and	and	CCONJ	CC	_	14	cc	_	_
11	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	14	nsubj	_	_
12	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	14	cop	_	_
13	what	what	PRON	WP	PronType=Int	14	nsubj	_	_
14	changes	change	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	conj	_	_
15	how	how	ADV	WRB	PronType=Int	17	advmod	_	_
16	something	something	PRON	NN	Number=Sing|PronType=Ind	17	nsubj	_	_
17	moves	move	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	14	ccomp	_	_
18	.	.	PUNCT	.	_	5	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 a** | present | a force | a push or a pull |  |  |  |  | tree rules |
| 2 | **is** | present | it |  |  |  |  | change *property* | tree rules |
| 3 | **move** | present | something |  |  |  |  |  | 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:004-pushes-and-pulls-move-and-stop.lesson:5`.

**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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