Friction Challenge

What are the different types of friction?

• Static friction, kinetic friction, rolling friction, fluid friction

• Smooth friction, rough friction, bumpy friction, slippery friction

• Hard friction, soft friction, solid friction, liquid friction

• Fast friction, slow friction, medium friction, high friction

How does the weight of an object affect friction?

• Friction is unrelated to the weight of the object.

• Friction decreases with the weight of the object.

• Weight has no effect on friction.

• Friction increases with the weight of the object.

What is the formula to calculate frictional force?

• Frictional force = mass x acceleration

• Frictional force = work / energy

• Frictional force = distance / time

• Frictional force = coefficient of friction x normal force

Name one method to reduce friction between two surfaces.

• Adding more weight to the surfaces

• Increasing the roughness of the surfaces

• Using lubricants

• Applying more pressure to the surfaces

Give an example of friction in everyday life.

• Sliding on a wet surface

• Sitting on a chair

• Rubbing your hands together to create warmth

• Walking on a carpet

What is an experiment to demonstrate the effect of friction?

• Using a block on an inclined plane to measure the distance it travels with and without friction

• Measuring the weight of an object to determine the influence of friction

• Rolling a ball on a flat surface to observe the impact of friction

• Dropping a ball from a height to measure the effect of friction

Explain static friction and give an example.

• Static friction occurs between a car's tires and the road surface when the car is moving at a high speed.

• Static friction occurs between a car's tires and the road surface when the car is at rest.

• Static friction is the force that causes objects to slide against each other.

• Static friction is the force that occurs between two objects in motion.

How does surface roughness affect friction?

• Surface roughness decreases friction

• Surface roughness has no effect on friction

• Surface roughness increases friction

• Surface roughness reduces friction

What is the role of lubricants in reducing friction?

• Lubricants cause surfaces to stick together, increasing friction.

• Lubricants have no effect on reducing friction.

• Lubricants create a layer between moving surfaces, reducing friction.

• Lubricants increase friction by creating more resistance between surfaces.

Describe the impact of friction on moving objects.

• Friction slows down or stops moving objects.

• Friction has no impact on moving objects

• Friction speeds up moving objects

• Friction makes moving objects float