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10
×
Friction is a force that acts in an ___________ direction of movement. a-similar b-opposite
b-opposite
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10
×
The bigger the arrow, the smaller the forces. True or false.
false
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×
seesaw
Swap points!
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×
gold
Win 50 points!
Okay!
×
gift
Win 5 points!
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×
thief
Give points!
5
10
15
20
25
20
×
What is the resultant force and its direction?
6N to the left
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×
eraser
Reset score!
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×
star
Double points!
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×
gift
Win 25 points!
Okay!
×
baam
Lose 15 points!
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20
×
When most objects with smooth surfaces rub, there is less friction. (True or False)
true
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10
×
What is the resultant force and its direction?
1N to the right
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15
×
The unit of force is ........................
Netwon
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20
×
which produces greater friction .............. a-Rougher surfaces b-smooth surfaces.
. a-Rougher surfaces
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25
×
What is the resultant force and its direction?
9N to the Right
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20
×
........................ Is a force that works against of a moving object.
Friction force
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×
thief
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5
10
15
20
25
×
fairy
Take points!
5
10
15
20
25
×
gift
Win 25 points!
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×
baam
Lose 10 points!
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15
×
heavy objects can give low friction. (TRUE or FALSE)
false
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5
×
True or Fales: Friction can make things slow down or stop.
True
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20
×
We use an arrow to measure the direction and magnitude. (True or False)
true
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20
×
What is the resultant force and what is the direction?
110 to the left
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×
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