a ball tossed vertically upward reaches its highest point and then falls back to its starting point. during this up-and-down motion the acceleration of the ball is always .

The force of gravity is a force that attracts two objects with mass towards each other. The strength of the gravitational force between two objects depends on the mass of the objects and the distance between them. The force of gravity is what causes objects to fall towards the ground when they are dropped, and it is also what keeps the moon orbiting around the earth.

During the upward motion of the ball, the acceleration of the ball is always downward, towards the earth. The acceleration of the ball is due to the force of gravity, which is always directed towards the center of the earth. The magnitude of the acceleration is approximately 9.8 m/s^2, or 1 g.

As the ball reaches its highest point and begins to fall back towards the starting point, the acceleration of the ball changes. The direction of the acceleration is still downward, but the magnitude of the acceleration increases as the ball falls faster and faster. This is because the force of gravity increases as the speed of the ball increases.

As the ball reaches the starting point and comes to a stop, the acceleration of the ball becomes zero. The ball then begins to accelerate upward again, and the process repeats.

Hence, the acceleration of the ball is caused by the force of gravity.

To learn more about gravity from the given link:

https://brainly.com/question/9934704

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