Friction

What is friction?

• It is an force that opposes motion

• It is the force per unit area

What are the factors that that affect friction

• Area of contact

• Weight of an object

• Nature of surface

• Magnetic field

Name one effect of friction

Name the three types of friction

• Static friction

• Sliding friction

• Rolling friction

• Fluid friction

Give three ways to reduce friction

• Using lubricants

• Using Soap solution

• Having grooves on tyres

• Polishing surfaces

Why is walking on a wet floor difficult?

• Because of less friction

• Because of more friction

What does fluid friction depend on?

• Shape of the object

• Speed of the object

• Nature of the fluid

• Weight of the object