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- 1. Multiple Choice
The force of friction acts in the direction__________ to the motion of the object
as same as
opposite
both
all of the above
- 2. Multiple Choice
without friction, an object in motion would never stop
true
false
- 3. Multiple Choice
Material with _______________ surfaces have less friction
smooth
rough
both
- 4. Multiple Choice
you can walk because there is friction between your __________ and ______________
ground and air
feet and ground
feet and air
air and ground
- 5. Multiple Choice
These are examples of lubricants (oiling) materials.
oil,
grease
powder
all of the above
- 6. Multiple Choice
The rougher the surface, the faster an object will travel over the surface.
True
False
- 7. Multiple Choice
Force the opposes motion between 2 surfaces.
force
friction
gravity
newton
- 8. Multiple Choice
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 (sole) on the bottom of your shoes
All are examples that are helpful
- 9. Multiple Choice
True/False: Everything's have friction.
True
False
- 10. Multiple Choice
Friction helps us move a heavy object across the carpet.
True
False
- 11. Multiple Choice
When most objects with smooth surfaces rub, there is
---------friction.
more
less
- 12. Multiple Choice
What does friction produce?
sound
light
Heat
- 13. Multiple Choice
On which surface will a toy car travel the furthest?
Ice
carpet
Grass
- 14. Multiple Choice
Which of these could increase the friction between objects?
A rough surface
A smooth surface
water, oil
- 15. Multiple Choice
Which of these explains how friction affects the speed of a moving object?
Friction can slow down objects until they stop.
Friction pushes objects to higher speeds.
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