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20 questions
Wheels on a skateboard most likely experience...
Rolling Friction
Sliding Friction
Fluid Friction
Static Friction
Rough surfaces have _____________ smooth surfaces.
greater friction than
less friction than
the same level of friction as
Which type of friction does a plane experience when flying through the air?
rolling
fluid
static
sliding
A force that opposes motion between any surfaces that are in contact.
gravity
acceleration
friction
direction
What type of friction is the person working against when the boulder is NOT moving?
fluid
static
rolling
sliding
Which type of friction do bike wheels work against?
rolling
static
fluid
sliding
Which type of friction is the parachute experiencing?
Fluid
Static
Sliding
Rolling
There is less friction on snow (A) than on grass (B). What is true?
Person A will slide faster than B.
Person B will slide faster than A.
They will slide at the same speed.
_____________ friction acts on objects that are not moving.
Sliding
Rolling
Static
Fluid
Rolling friction is when an object ___________ over a surface.
bounces
rolls
slides
Fluid friction happens with objects moving through ________________.
gases or liquids
solids or liquids
gases or solids
What does friction do?
Speeds up objects
Slows down objects
Nothing
Which is an example of ROLLING friction?
Plane flying in air
Bike wheels moving on ground
Kid moving down slide
Butterfly flying through air
Which is an example of FLUID friction?
Kids roller-skating
Bike wheels moving on ground
Kid moving down slide
Butterfly flying through air
Which is an example of SLIDING friction?
Kids roller-skating
Bike wheels moving on ground
Kid moving down slide
Butterfly flying through air
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