Question

multiple choice question
a ball is thrown by a young girl. once the ball is released from her hands, which of the following are used in understanding the subsequent motion of the ball. air resistance is negligible.
○ the force of her throw
○ the acceleration of the ball during the throw
○ the velocity of the ball once she has released it
○ the position of the sun
○ the weight of the ball

Explanation:

Once the ball is released, the throw force no longer acts. The sun's position is irrelevant to the ball's near-Earth motion. The ball's velocity at release determines its initial motion, its acceleration (from gravity) governs how motion changes, and its weight (gravitational force) causes that acceleration. All three are key to analyzing the subsequent motion.

Answer:

• The acceleration of the ball during the throw
• The velocity of the ball once she has released it
• The weight of the ball