Choose the best answer and write this on a separate paper.
1.
A. icy roads
B. polished floor
Which of the following is NOT an example of reducing friction?
C. sandy floor
wet floor
2.
What do you call a force that opposes motion between two surfaces?
A. energy
B. force
C. friction
D motion
3.
The boat sailing on the river slows down. What kind of friction is acting
on it?
A. fluid friction
B. rolling friction
c. sliding friction
D. static friction
Which of these is an example showing undesirable friction?
A. pushing a table
c. holding a pen to write
B. lighting a matchstick
D. stomping the car's breaks
5.
Why do we wear shoes inside a mall with very shiny tiled floor? It is
because wearing of shoes
A.
decreases force due to friction which can cause you to slide
B. increases the friction which prevents you from sliding
c. protects you from wet floor
D.
covers our feet from cold
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