--- title: Once a tyre slides, it grips less than when it rolls, which is why a… — Living with friction: oil, wheels and grip · tree and pragmatics description: Once a tyre slides, it grips less than when it rolls, which is why a spinning tyre screeches and good drivers start smoothly. Who acts: tyre, spinning tyre, screeches. A sentence of the lesson «Living with friction: oil, wheels and grip» of the physics course of Mova's primary school with its depend --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/physics/7-living-with-friction/15/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Physics](https://md.mova.elamur.ai/free/en/corpora/school/physics/) / [Living with friction: oil, wheels and…](https://md.mova.elamur.ai/free/en/corpora/school/physics/7-living-with-friction/) / 15 # Living with friction: oil, wheels and grip, sentence 15 Once a tyre slides, it grips less than when it rolls, which is why a spinning tyre screeches and good drivers start smoothly. **Who acts:** tyre, spinning tyre, screeches · **What happens:** slide, grip, roll, be, spin, screech This is a sentence of the lesson «Living with friction: oil, wheels and grip» 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 (tyre, spinning tyre, screeches), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:physics:007-living-with-friction.lesson:15 # text = Once a tyre slides, it grips less than when it rolls, which is why a spinning tyre screeches and good drivers start smoothly. # source = school lesson (ours) # course = physics # lesson = 007-living-with-friction.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 ×1 1 Once once SCONJ IN _ 4 mark _ _ 2 a a DET DT Definite=Ind|PronType=Art 3 det _ Agree=R5-strong|Haiku=4:det 3 tyre tyre NOUN NN Number=Sing 4 nsubj _ _ 4 slides slide VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 advcl _ _ 5 , , PUNCT , _ 4 punct _ _ 6 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 7 nsubj _ _ 7 grips grip VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 8 less less ADV RBR Degree=Cmp 7 advmod _ _ 9 than than ADP IN _ 8 fixed _ _ 10 when when SCONJ WRB _ 12 mark _ _ 11 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 12 nsubj _ _ 12 rolls roll VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 advcl _ _ 13 , , PUNCT , _ 16 punct _ _ 14 which which PRON WDT PronType=Rel 16 nsubj _ _ 15 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 16 cop _ _ 16 why why ADV WRB PronType=Int 7 advcl:relcl _ _ 17 a a DET DT Definite=Ind|PronType=Art 19 det _ Agree=R5-strong|Haiku=20:det 18 spinning spin VERB VBG VerbForm=Ger 19 amod _ Agree=R5-strong|Haiku=20:amod 19 tyre tyre NOUN NN Number=Sing 20 nsubj _ Agree=R7-rel-agree|Haiku=20:compound 20 screeches screech NOUN NNS Number=Plur 24 nsubj _ _ 21 and and CCONJ CC _ 23 cc _ _ 22 good good ADJ JJ Degree=Pos 23 amod _ _ 23 drivers driver NOUN NNS Number=Plur 20 conj _ _ 24 start start VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 16 advcl:relcl _ _ 25 smoothly smoothly ADV RB _ 24 advmod _ _ 26 . . PUNCT . _ 7 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **slide** | present | a tyre | | | | | | vn run-51.3.2-2 «NP V»: agent=Theme | | 2 | **grip** | present | tyre | | | | | less *property* | vn touch-20-1 «NP V NP»: agent=Agent | | 3 | **roll** | present | tyre | | | | | | vn run-51.3.2-2 «NP V»: agent=Theme | | 4 | **is** | present | | | | | | why *property* | tree rules | | 5 | **spin** | gerund | | | | | | | vn roll-51.3.1 «NP.theme V»: agent=Theme | | 6 | **screech** | | a spinning tyre | | | | | | tree rules | | 7 | **start** | present | screeches and good drivers | | | | | smoothly *property* | vn begin-55.1-1-1 «NP.eventuality V»: agent=Eventuality | 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. **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:007-living-with-friction.lesson:15`. **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 ×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/). - ← previous: [Living with friction: oil, wheels and…, 14](https://md.mova.elamur.ai/free/en/corpora/school/physics/7-living-with-friction/14/) - next →: [Living with friction: oil, wheels and…, 16](https://md.mova.elamur.ai/free/en/corpora/school/physics/7-living-with-friction/16/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/physics/7-living-with-friction/)