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Friction: A Force That Opposes Motion
Test Description: Use this to study for your quiz
Instructions: Answer all questions to get your test result.
1) In which of the following activities is friciton harmful?
A
an eraser erasing
B
a person walking
C
car engine parts wearing out
D
brakes stoppping a car
2) What is a force that opposes motion between two surfaces that are in contact?
A
motion
B
velocity
C
friction
D
acceleration
3) Which of these is opposed by statce friction?
A
a pencil rolling on a table
B
a chair sliding on a floor
C
a dog running in a yard
D
a worker pushing a non-moving box
4) Which would NOT be a way to reduce friction?
A
lubricating with oil
B
pouring sand on ice
C
using sandpaper
D
using ball bearings
5) Which are the two factors that determine that amound of friction?
A
hills and valleys and the roughness of the surfaces
B
the force and the roughness of the surfaces
C
the force and how much surfaces come in contact
D
the force and the weight exerted on the surfaces
6) Which of these is opposed by kinetic friction?
A
a book sitting on a table
B
a box sliding on a floor
C
a child leaning on a building
D
a cat standing in a yard
7) In which of the following activites is friction helpful?
A
car tires moving a car forward
B
soil erosion
C
engine parts wearing out
D
holes developing in your socks
8) Does the use of sandpaper on a piece of wood demostrate fricton?
A
True
B
False
9) Is all matter effected by gravity?
A
False
B
True
10) There are two Newton laws of motion
A
True
B
False
*select an answer for all questions
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