Friction as a force

Front

Who discovered the frictional force?

Back

Leonardo da Vinci

Front

What do we apply to a door that makes a cracking noise while opening and closing?

Back

Oil

Front

Why do we slip and fall?

Back

Due to reduced friction.

Front

When was the frictional force discovered?

Back

1943

Front

A force that works when two objects come in contact with each other is called a _____________.

Back

Contact force or friction force.

Front

What is friction?

Back

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

Front

What are the two types of friction?

Back

Static friction and kinetic (or sliding) friction.

Front

What is static friction?

Back

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

Front

What is kinetic friction?

Back

Kinetic friction is the friction that acts between moving surfaces.

Front

How does friction affect motion?

Back

Friction can slow down or stop the motion of an object.