Force and Friction

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed
• less friction doesn't affect speed

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Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

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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

What does friction produce?

• light
• sound
• heat
• gravity

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 What is the unit called that measures force?

• weight
• meter
• Newton
• kilogram

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What is force?

• A force is a push or a pull upon an object resulting from the object's interaction with another object.
• something used in Star Wars 
• It is the amount of space between two points.
• It is Superman's power

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The piece of equipment to measure force is called...

• Spring Scale
• Triple Beam balance
• Force Scale 
• Pull Spring

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What is a net force?

• The total amount of force applied to an object.
• The amount of friction on an object.
• The amount of force a net could put on an object.
• The amount force applied to a net.

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What is kinetic energy?

• The force needed to slow an object down.
• The energy of motion
• Built up energy before it is released.
• The amount of energy between two surfaces.

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What surface would have the most friction?

• Glass
• Marble
• Pool table
• Sandpaper