* Constant Force: The primary force acting on a projectile is gravity. This force is constant, meaning it always acts downwards with the same strength, regardless of the projectile's velocity or position.
* Constant Acceleration: Since the force of gravity is constant, the acceleration it produces is also constant. This acceleration is known as the acceleration due to gravity (usually denoted as 'g') and has a value of approximately 9.8 m/s² near the Earth's surface.
Important Points:
* Horizontal Motion: The projectile's horizontal velocity remains constant throughout the flight (assuming no air resistance). This is because there's no force acting horizontally on the projectile.
* Vertical Motion: The projectile's vertical velocity changes constantly due to the acceleration due to gravity. It increases as the projectile falls and decreases as it rises.
In Summary:
While the projectile's velocity changes (both horizontally and vertically) throughout its flight, the acceleration due to gravity remains constant at approximately 9.8 m/s² downwards.
