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1.) What force works against motion?
a. friction
b. gravity
c. direction
d. both b and c

2.) Which of the following is not used to reduce friction?
a. wheels
b. ball bearings
c. oil
d. rough surfaces

3.) Which among the types of friction is the greatest?
a. sliding
b. static
c. rolling
d. They all have the same strength

4.) What makes rolling friction less than sliding friction?
a. In sliding friction, the surfaces slide over the other while in rolling friction, the surface rolls.
b. Rolling friction has a lesser surface area in contact
c. Rolling friction has a greater surface area in contact
d. none of these

5.) The type of material on the sole of your shoe affects the amount of grip you have. This statement is ______.
a. true
b. false
c. uncertain
d. none of these​

Sagot :

Rowlybeyondanythingidn

Answer:

1. d

2. C.

3. A

4. A

5. A

Explanation:

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