4ème-Appliquer la formule de la vitesse (plan de travail)

Appliquer la formule de la vitesse

Sans conversion

• Calculer une vitesse
• Calculer une distance
• Calculer une durée

Problème N°2

Problème N°1

Quizizz 4

Avec conversion

• Calculer une vitesse
• Calculer une distance
• Calculer une durée

Exercice N°6

Problème N°5

Problème N°4

Tache complexe

Problème N°3

Problèmes

Appliquer la formule sans conversion

Exercice n°6

1. Exerce

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Objectifs

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Objectifs

Appliquer la formule avec conversion

Quizizz n°4

1. Exerce

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Un cheval parcourt un tour de piste en 2min 9s. Sachant que la piste mesure 1951 m 1) Calcule la vitesse moyenne en m/s 2) Convertis cette vitesse en km/h

Calcul de durée

Problème n °1

1. Exerce

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Objectifs

Brevet 2023

Correction

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Sachant qu'un pont a une longueur de 3000 m, quelle est la vitesse moyenne d'un cyclisten exprimée en km/h, le traversant en 10min.

Calcul de durée

Problème n°2

Brevet 2023

1. Exerce

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Correction

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Objectifs

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Un train part de Marseille à 12h55 pour atteindre bordeau à 18h25. 1) Calculer la durée du voyage 2) Sachant que les deux villes sont séparées de 715km.Calculer la vitesse moyenne de ce train en km/h

Calcul de durée

Correction

Problème n°3

1. Exerce

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Objectifs

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Un automobiliste effectue un aller-retour entre son travail et son domicile, séparé de 60km.A l'aller, il roule à 100km/hAu retour , il roule à 40km/h 1. Quel temps a-t-il mis à l'aller ?2. Quel temps a-t-il mis au retour ? 3. Quelle est sa vitesse moyenne sur l'ensemble du trajet ?

Calcul de durée

Problème n°4

Correction

1. Exerce

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Objectifs

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Suite du problème

1) Montrer que AC = 6,5m Deux arraignées se trouvant au sommet du poteau (point C) décident de rejoindre le bas du câble(point A) par deux chemins différents 2) La première araignéese déplace le long de AC à une vitesse de 0,2 m/s. Vérifier qu'il faut 32,5 secondes pour atteindre le bas du cable.

Calcul de durée

Problème n°5

1. Exerce

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Objectifs

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Suite du problème

La deuxième araignée parcourt le chemin en pointillés 3) Calculer FH et HA Deuxième arraignée marche à une vitesse de 0,2 m/s le long de CF et HA, et descends le long du chemin FH à 0,8 m/s 4) Quelle araignée arrivera en premier ?

Calcul de durée

Correction

1. Exerce

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Objectifs

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Tache Complexe

Le tsunami

1. Exerce

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Objectifs

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close

Interactivity and animation can be your best allies when it comes to creating tables, infographics, or graphics that help provide context to information and simplify data for translation to your audience. We are visual beings and find it easier to 'read' images than to read written text.

close

Interactivity and animation can be your best allies when it comes to creating tables, infographics, or graphics that help provide context to information and simplify data for translation to your audience. We are visual beings and find it easier to 'read' images than to read written text.

close

Interactivity and animation can be your best allies when it comes to creating tables, infographics, or graphics that help provide context to information and simplify data for translation to your audience. We are visual beings and find it easier to 'read' images than to read written text.

close

Interactivity and animation can be your best allies when it comes to creating tables, infographics, or graphics that help provide context to information and simplify data for translation to your audience. We are visual beings and find it easier to 'read' images than to read written text.

close

Interactivity and animation can be your best allies when it comes to creating tables, infographics, or graphics that help provide context to information and simplify data for translation to your audience. We are visual beings and find it easier to 'read' images than to read written text.

close

Interactivity and animation can be your best allies when it comes to creating tables, infographics, or graphics that help provide context to information and simplify data for translation to your audience. We are visual beings and find it easier to 'read' images than to read written text.

close

Interactivity and animation can be your best allies when it comes to creating tables, infographics, or graphics that help provide context to information and simplify data for translation to your audience. We are visual beings and find it easier to 'read' images than to read written text.

VS

close

Interactivity and animation can be your best allies when it comes to creating tables, infographics, or graphics that help provide context to information and simplify data for translation to your audience. We are visual beings and find it easier to 'read' images than to read written text.

close

Interactivity and animation can be your best allies when it comes to creating tables, infographics, or graphics that help provide context to information and simplify data for translation to your audience. We are visual beings and find it easier to 'read' images than to read written text.

close

Interactivity and animation can be your best allies when it comes to creating tables, infographics, or graphics that help provide context to information and simplify data for translation to your audience. We are visual beings and find it easier to 'read' images than to read written text.

close

Interactivity and animation can be your best allies when it comes to creating tables, infographics, or graphics that help provide context to information and simplify data for translation to your audience. We are visual beings and find it easier to 'read' images than to read written text.