At Maximum Altitude
* Velocity: Zero (0 m/s). At the peak of its trajectory, the ball momentarily stops before changing direction.
* Acceleration: Constant downward acceleration due to gravity (approximately 9.8 m/s²). Even though the ball has stopped moving upward, gravity is still acting on it, pulling it back down.
Just Before Hitting the Ground
* Velocity: The same magnitude as its initial upward velocity but in the opposite direction (negative). This is because it accelerates downwards due to gravity, gaining speed as it falls.
* Acceleration: Constant downward acceleration due to gravity (approximately 9.8 m/s²). Gravity continues to act on the ball throughout its entire flight.
Key Points
* Acceleration is constant: Throughout the entire flight, the only force acting on the ball (ignoring air resistance) is gravity, which causes a constant downward acceleration.
* Velocity changes: The ball's velocity changes from positive (upward) to zero (at the peak) to negative (downward) due to the constant acceleration of gravity.
