Friction

Sally experiences-

• Rolling Friction

• Sliding Friction

• Fluid Friction

• Static Friction

Which of the following is an example of rolling kinetic friction?

• box sliding across the floor
• bike rolling along the road
• car skidding to a stop
• soccer player making a slide tackle 

Which of the following is opposed by kinetic friction?

• A truck being pushed but not moving
• A box being pushed but not moving
• A box being pushed and sliding across the floor
• A wagon being pulled but not moving

What type of friction is not moving?

• static
• dynamic
• kinetic
• rolling

Force the opposes motion between 2 surfaces

• force
• Newton
• friction
• net force

Wheels on a skateboard most likely experiences-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Which would NOT be a way of reducing friction?

• making the surfaces smoother
• using lubricants such as waxes, oils, or grease
• changing from sliding friction to rolling friction using ball bearings
• Using kitty litter on snow and ice to help your car gain traction

This car is turning, but there’s a puddle of water in the road. Which diagram best shows how the puddle will affect the path of the car after it hits the puddle?

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Swimming fish experience-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Which of the following is an example of friction that is helpful?

• Brakes used on a bike
• Tires from a car on the road
• Tread on the bottom of your shoes
• All are examples that are helpful