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Friction Force
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heavy objects can give low friction. (TRUE or FALSE)
false
If a contact surface is rough, the friction is high. (TRUE or FALSE)
TRUE
What is the resultant force and its direction?
1N to the right
What is the resultant force and its direction?
6N to the left
What is the resultant force and its direction?
9N to the Right
What is the direction of the force in this image?
RIGHT
What is the resultant force and its direction in this image?
4N to the left
What is the resultant force and what is the direction?
110 to the left
We use an arrow to measure the direction and magnitude. (True or False)
true
The bigger the arrow, the smaller the forces. True or false.
false
what's the name of this equipment?
spring scale
When most objects with smooth surfaces rub, there is less friction. (True or False)
true
........................ Is a force that works against of a moving object.
Friction force
Friction is a force that acts in an ___________ direction of movement. a-similar b-opposite
b-opposite
which produces greater friction .............. a-Rougher surfaces b-smooth surfaces.
. a-Rougher surfaces
1. Which of the following is an example of friction that is helpful? a-Brakes used on a bike b-Tires from a car on the road c-Tread on the bottom of your shoes d-All are examples that are helpful
d-All are examples that are helpful
The unit of force is ........................
Netwon
Friction is a ..............................force a-contact b- noncontact
a-contact
Factors affect the friction force.  a-type of surfaces   b-The weight c-both
c-both
True or Fales: Friction can make things slow down or stop.
True
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