* Gravity is a constant force: Earth's gravitational pull is essentially constant near the surface. It depends on the mass of the Earth and the distance between the ball and the Earth's center.
* Distance changes slightly: While the ball is traveling a short distance upward, the change in distance from the Earth's center is negligible. This means the force of gravity remains practically the same.
* Acceleration due to gravity: The acceleration due to gravity (approximately 9.8 m/s²) is what causes the ball to slow down as it goes up and speed up as it comes down. This acceleration is caused by the constant force of gravity.
However:
* Air resistance: In real-world scenarios, air resistance does play a role. As the ball goes up, air resistance will slightly oppose the force of gravity, making it seem like the force of gravity is decreasing. However, this effect is relatively small compared to the actual force of gravity.
In summary: The force of gravity acting on the ball remains essentially constant during its upward journey. The change in the ball's motion is due to the constant acceleration caused by gravity.
