Model: A spacecraft passes between two moons. Moon 1 is larger (more massive) and shown closer to the spacecraft; Moon 2 is smaller and farther away. The model shows a longer gravity arrow pointing toward Moon 1 and a shorter gravity arrow pointing toward Moon 2. The spacecraft's motion arrow points straight upward at that moment, but the next position marks show its path bending slightly toward Moon 1.
Which statement is supported by the model?
- The spacecraft bends toward Moon 1 because the gravitational pull from Moon 1 is stronger, changing the spacecraft's motion even though it is moving upward. (correct answer)
- The spacecraft must move in the same direction as the strongest gravity arrow, so it should instantly turn and move directly toward Moon 1.
- The spacecraft's path cannot bend because gravity only affects objects that are already falling.
- The spacecraft bends toward Moon 1 only because the model draws it that way; arrows in models do not represent real forces.
Explanation: Gravity affects motion by exerting pulls that redirect or accelerate objects. Gravity is a force that changes motion by adding velocity components toward the attractor. It can bend paths near massive bodies or change speeds in free fall. Verify by comparing motion and force directions; differences cause deflections. Misbelief: gravity solely straight down, but it's central, toward the mass. Impacts range from falling spacecraft to planetary systems. Always, gravity modifies motion across distances.