Here's why:
* Horizontal motion with constant velocity: This means the object moves at a steady speed in a straight line horizontally. There's no force acting on it horizontally, so its velocity remains unchanged.
* Vertical acceleration: This means the object is accelerating upwards or downwards due to gravity. The acceleration due to gravity is constant and acts downwards.
Key characteristics of projectile motion:
* Parabolic trajectory: The path of a projectile is a parabola, due to the constant horizontal velocity and the changing vertical velocity.
* Constant horizontal velocity: The horizontal component of the projectile's velocity remains constant throughout its flight.
* Changing vertical velocity: The vertical component of the projectile's velocity changes due to gravity. It accelerates downwards at a rate of 9.8 m/s².
Examples of projectile motion:
* A ball thrown into the air
* A bullet fired from a gun
* A rocket launched into space
Understanding projectile motion is crucial in fields like physics, engineering, and sports.
