Question

what is a limitation of modeling the effect of gravity on a falling object by using a ball dropped from different heights?
a. gravity varies slightly at different heights.
b. the height that a ball bounces is affected by the height from which it was dropped.
c. air slows down the fall of any object, including the ball.
d. the weight of the ball can vary.

Explanation:

To determine the limitation of the model (dropping a ball from different heights to study gravity's effect), we analyze each option:

• Option A: Gravity's variation with height is negligible for typical drop heights in such experiments, so this is not a major limitation.
• Option B: The bounce height relates to energy conservation, not a limitation of modeling gravity's effect on the falling motion itself.
• Option C: In real - world, air resistance (drag) acts on the falling ball, but the model often assumes a vacuum (no air resistance) for idealized free - fall under gravity. So air slowing the fall is a limitation as the model doesn't account for this real - world factor.
• Option D: The weight of a single ball used in the experiment is constant, so this is not a limitation.

Answer:

C. Air slows down the fall of any object, including the ball.