Question

the force that resists motion when objects are in contact with one another is _____.
o inertia
o velocity
o gravity
o friction

Explanation:

Friction is the force that opposes the relative motion of two surfaces in contact. Inertia is the tendency of an object to resist changes in its state of motion. Velocity is a measure of the rate and direction of motion. Gravity is the force of attraction between two masses.

Answer:

D. friction