FRICTIONAL FORCE

Front

What happens to the distance traveled by a toy car if the surface is smoother?

Back

The distance traveled by the toy car will increase.

Front

What effect does frictional force have on a moving object?

Back

Frictional force acts in the opposite direction of movement.

Front

What is the relationship between the weight of objects and the amount of friction?

Back

The amount of friction depends on the weight of the objects pressing together.

Front

What is the unit of measurement for force?

Back

Newton.

Front

If the frictional force decreases, what is likely to happen to the motion of an object?

Back

The object may move faster or slide more easily.

Front

What is friction?

Back

Friction is a force that opposes the relative motion of two surfaces in contact.

Front

How does surface texture affect friction?

Back

Smoother surfaces generally produce less friction than rougher surfaces.

Front

What are the two main types of friction?

Back

Static friction and kinetic (or dynamic) friction.

Front

What is static friction?

Back

Static friction is the frictional force that prevents two surfaces from sliding past each other.

Front

What is kinetic friction?

Back

Kinetic friction is the frictional force acting between moving surfaces.