Question

which example best represents an object with balanced forces acting upon it? a a boat moving through the water. b a book sitting on a high shelf. c a wagon rolling down a steep hill. d a baseball thrown in the air.

Explanation:

Balanced forces occur when the net force on an object is zero, resulting in no change in its motion. A book sitting on a high shelf has the force of gravity pulling it down and the normal force of the shelf pushing it up. These two forces are equal in magnitude and opposite in direction, creating a state of equilibrium. In contrast, a boat moving through water has forces like water - resistance and the force propelling it, a wagon rolling down a hill has gravity and friction forces causing acceleration, and a baseball thrown in the air has gravity and air - resistance acting on it, all of which are examples of unbalanced forces.

Answer:

B. A book sitting on a high shelf