Question

question 13 (1 point)
suppose a ball is thrown downward in the absence of air resistance. make a statement concerning its acceleration.
its acceleration is constantly increasing.
its acceleration is constant.
its acceleration is constantly decreasing.
its acceleration is zero.

Explanation:

In the absence of air resistance, a ball thrown downward is in free - fall (near the Earth's surface). The only force acting on it is gravity. According to the laws of physics, the acceleration due to gravity ($g$, approximately $9.8\ m/s^{2}$ near the Earth's surface) is constant for objects in free - fall. This acceleration does not change with the speed of the object or its position (as long as we are close to the Earth's surface and the variation of $g$ with height is negligible). So the acceleration of the ball is constant.

Answer:

B. Its acceleration is constant.