Par rapport au point de lancement P

Par rapport au point de lancement P0, la position du projectile P est donnée par −−→P0P. Si on néglige la résistance de l’air, le projectile, une fois lancé, n’est soumis qu’à l’accélération ⃗g de la pesanteur. Donc ⃗a = ⃗g. Il s’ensuit que

Results (English) 1:

With respect to the launch point P0, the position of the projectile P is given by −−→P0P. If we neglect air resistance, the projectile, once launched, is only subject to the acceleration ⃗g of gravity. So ⃗a = ⃗g. It follows that

Results (English) 2:

The position of projectile P is given by - → P0P relative to the launch point P0. If air resistance is ignored, once the projectile is launched, it is only affected by the gravitational acceleration ÷ g. Therefore, ⃗ a=⃗ g. therefore

Results (English) 3:

The position of the projectile P relative to the launching point P0 is given by → P0p. If air resistance is ignored, once the projectile is launched, it will only be accelerated by gravity. So ↓ a =↓ g. As a result,