Question

multiple-choice question which of these objects is in free-fall? choose all correct answers!!! a ball that is dropped. a ball that is thrown downward after it is released. a ball that is thrown upward after it is released. a rocket being pushed upward by its engines.

Explanation:

Free-fall is defined as motion where the only force acting on an object is gravity (air resistance is neglected).

• A dropped ball only has gravity acting on it after release.
• A ball thrown downward, after release, only has gravity acting on it (the initial throw force ends once released).
• A ball thrown upward, after release, only has gravity acting to slow it and pull it back down.
• A rocket has engine thrust (an additional force besides gravity), so it is not in free-fall.

Answer:

A. A ball that is dropped.
B. A ball that is thrown downward after it is released.
C. A ball that is thrown upward after it is released.