Friction

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another surface.

Front

What direction does friction act in relation to movement?

Back

Friction acts in the opposite direction of movement.

Front

What happens to friction on rough surfaces?

Back

Rougher surfaces have greater friction compared to smoother surfaces.

Front

What is acceleration?

Back

Acceleration is a change in velocity, which can involve a change in speed, direction, or both.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its motion.

Front

True or False: The motion of an object will change when an unbalanced force is applied to it.

Back

True.

Front

What is the effect of smooth surfaces on friction?

Back

Smooth surfaces create less friction when they rub against each other.

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest and prevents it from starting to move.

Front

What is kinetic friction?

Back

Kinetic friction is the force that opposes the motion of two surfaces sliding past each other.

Front

How can friction be reduced?

Back

Friction can be reduced by using lubricants, smoothing surfaces, or using wheels.