Question

identify which two of the following objects have unbalanced forces acting on them. spydivers have many forces acting on them. a train slowing down to stop at a station a tennis ball being served a toolbox resting on a bench a shirt hanging on a clothesline

Explanation:

To determine which objects have unbalanced forces, we analyze each option:

• A train slowing down to stop at a station: A slowing train has a change in velocity (deceleration), so the net force is not zero (unbalanced forces act to reduce its speed).
• A tennis ball being served: When served, the ball accelerates (changes speed/direction), so unbalanced forces (from the racket, air, gravity) act on it.
• A toolbox resting on a bench: At rest, the normal force and gravity balance (net force = 0, balanced forces).
• A shirt hanging on a clothesline: At rest, tension and gravity balance (net force = 0, balanced forces).

Answer:

A. A train slowing down to stop at a station
B. A tennis ball being served