Friction Quiz

What is friction?

• Friction is the force that assists the motion of an object when it comes into contact with another object or surface.

• Friction is the force that causes objects to repel each other when they come into contact.

• Friction is the force that only affects objects in motion and has no effect on stationary objects.

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

Name the three types of friction.

• fluid friction, surface friction, and air friction

• sliding friction, magnetic friction, and electrical friction

• internal friction, external friction, and gravitational friction

• static friction, sliding friction, and rolling friction

Which type of friction occurs when an object is not moving?

• Fluid friction

• Rolling friction

• Static friction

• Kinetic friction

Which type of friction occurs when an object is in motion?

• static friction

• kinetic friction

• rolling friction

• fluid friction

What are the factors that affect friction?

• Temperature, speed, weight

• Color, shape, size

• Time, distance, volume

• Type of surface & mass

Which type of friction is responsible for the rolling motion of a wheel?

• static friction

• kinetic friction

• fluid friction

• rolling friction

True or False: Friction always opposes motion.

• False

• True

• Friction has no effect on motion

• Friction can sometimes assist motion

What is the force that opposes the motion of an object on a surface called?

• inertia

• gravity

• friction

• momentum

Which type of friction is generally greater: static friction or kinetic friction?

• static friction

• fluid friction

• rolling friction

• kinetic friction

A hockey puck slides on ice at a constant velocity. What is the net force acting on the puck?

• Zero
• Equal to its weight
• Less than its weight but greater than zero
• Depends on the speed of the puck