Friction Crossword Puzzle

QUESTIONS LIST: force: friction is a _ that opposes the motion of objects, friction: when two surfaces of two objects rub against each other, _ exists, opposite: friction always acts _ the direction of the object’s motion, sliding: _ friction is defined as the resistance that is created between any two objects when they are sliding against each other, rolling: _ friction is defined as the force which resists the motion of a ball or wheel and is the weakest types of friction, fluid: _ friction is defined as the friction that exists between the layers of the fluid when they are moving relative to each other, static: _ friction is defined as the frictional force that acts between the surfaces when they are at rest with respect to each other.