Question

when two objects with very different masses are attracted by gravity, the smaller-massed object will do most of the moving. why? answer options: select one of four the larger object needs a push. the larger object has much more inertia. the larger object pushes with more force. only large objects have gravity.

Explanation:

1. Analyze "The larger object needs a push": Gravity is an attractive force, not about needing a push, so this is incorrect.
2. Analyze "The larger object has much more inertia": Inertia is related to mass (more mass = more inertia). A larger - massed object has more inertia, meaning it resists changes in motion more. So the smaller - massed object, with less inertia, will move more. This is correct.
3. Analyze "The larger object pushes with more force": According to Newton's third law, the gravitational force between two objects is equal in magnitude (the force the larger object exerts on the smaller is equal to the force the smaller exerts on the larger). So this is incorrect.
4. Analyze "Only large objects have gravity": All objects with mass have gravity, so this is incorrect.

Answer:

B. The larger object has much more inertia.