Question

which object is in static equilibrium? a vase that has a net force acting on it and is sitting on a shelf a rolling ball that has a net force acting on it a book that has no net force acting on it and is sitting on a table a cruising car that has no net force acting on it

Explanation:

Static equilibrium means an object is at rest and the net - force acting on it is zero. A vase sitting on a shelf and a book sitting on a table are at rest. A rolling ball is in motion and a cruising car is also in motion. For an object to be in static equilibrium, it must be at rest and have a net - force of zero.

Answer:

A vase that has a net force acting on it and is sitting on a shelf, a book that has no net force acting on it and is sitting on a table