En compétition officielle de fléchettes, le centre de la cible est placé à 1,73 m de hauteur. Le joueur quant à lui se place à 2,37 m de la face avant de la cible. La fléchette a une masse de 20,0 g.
On suppose que la trajectoire a lieu dans un plan (Oxy) contenant le centre de la cible.

1. La fléchette est lancée horizontalement à la vitesse de 11,0 m·s-1 sur la droite passant par le centre de la cible. Calculer la coordonnée yf où arrive la fléchette.
a. yf=1,50 m.
b. yf=0,23 m.
c. yf=1,96 m.

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Question

05-11-2022
Physics

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En compétition officielle de fléchettes, le centre de la cible est placé à 1,73 m de hauteur. Le joueur quant à lui se place à 2,37 m de la face avant de la cible. La fléchette a une masse de 20,0 g.
On suppose que la trajectoire a lieu dans un plan (Oxy) contenant le centre de la cible.

1. La fléchette est lancée horizontalement à la vitesse de 11,0 m·s-1 sur la droite passant par le centre de la cible. Calculer la coordonnée yf où arrive la fléchette.
a. yf=1,50 m.
b. yf=0,23 m.
c. yf=1,96 m.

MERCI BEAUCOUP POUR VOTRE AIDE JE GALERE...

Sagot :

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