The projectile have minimum speed when it is in top of prabolic and it have max sped when it is in intial point
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The path of a projectile in earth gravity is that of a parabola.
Let us try and answer this quest by using a bullet or shell fired from a gun. The projectiles maximum speed is at the point of leaving its casing. From that moment it begins to be slowed by air pressure in front of the projectile and also curves towards the earth attracted by gravity. Point of interest. The rifling of a guns barrel does not make the projectile go faster. It makes it spin so that it travels straighter and not tumble like the old none spinning projectiles.
A projectile inevitably follows a parabolic path due to the force of gravity unless it has its own propulsion system.
Projectile motion is a form of motion wherein an object moves along a curved path under the action of gravity only. The height of a projectile in motion is dependent on gravity.
An object projected by force and continuing in motion by its own inertia.An objectile is a a projectile only when it is in a state of motion,usually it covers a parabola shape path.