A force that resists the motion of two surfaces that are touching is named?

• inertia
• gravity
• friction
• mass

An attractive force that exists between all objects that have mass is called?

• friction
• gravity
• inertia
• mass

A push or a pull on one object by another object is a _____.

• unbalanced force
• contact force
• balanced force
• noncontact force

To move a heavy object across the floor, you must first overcome _____, which tends to hold it in place.

• gravity
• sliding friction
• inertia
• static friction

After overcoming this type of friction, you must push against _____.

• sliding friction
• fluid friction
• stratic friction
• gravity

It's a unit of force or weight.

• joules
• meters
• kilograms
• newtons

The combination of all forces acting on an object is the _____.

• unbalanced forces
• net force
• balanced forces
• static friction

Forces that combine produce a net force of zero are _____.

• static friction
• unbalanced forces
• inertia
• balanced forces

Forces that combine produce a net force different from zero are _____.

• unbalanced forces
• sliding friction
• balanced forces
• fluid friction

_____ can cause an object to change its speed and/or direction.

• inertia
• balanced forces
• momentum
• unbalanced forces