Question

explain whether it is inertia or weight resisting the force as the table tennis ball and golf ball are being blown across the table?

Explanation:

Inertia is the property of matter that resists changes in motion. Weight is the force due to gravity acting on an object. When blowing the balls across the table, the resistance to the change in their state of motion (from rest to moving) is due to inertia. Weight acts vertically downwards and does not directly resist the horizontal force of the blow across the table.

Answer:

Inertia