* Initially: When the ball is thrown upwards, it has an initial upward velocity. Gravity immediately starts acting on it, slowing it down.
* At the highest point: As the ball slows down, its upward velocity decreases until it momentarily reaches zero at the highest point of its trajectory. Gravity is still acting on it at this point.
* Coming down: Once the ball's upward velocity reaches zero, gravity continues to act on it, causing it to accelerate downwards. This is why the ball falls back to the ground.
Key points:
* Direction: Gravity always acts downwards, pulling the ball towards the center of the Earth.
* Constant force: The force of gravity is constant near the Earth's surface, meaning it has the same strength regardless of the ball's speed or position.
* Acceleration: Gravity causes the ball to accelerate downwards, meaning its speed increases as it falls.
Let me know if you have any other questions!