Question

1. The force that opposes the motion of a body over a surface is called__________
(muscular force/friction)

2. Rolling friction is_________
than sliding friction. (greater/lesser)

3. The__________
on the surfaces in contact is the cause of friction
between them. (irregularities/regularities)

4. Use of lubricants_________
the friction. (increases/decreases)

5. Streamlined shape of a car ___________
drag due to air. (reduces/enhances)

don't give unnecessary answer​

Answer 1

answers

1. frictional force

2. lesser

3. irregularities

4. decreases

5. reduces

Answer 2

1.Friction

2.lesser

3.irregularities

4.reduces

5.enhances

Explanation:

1.The force that opposes the motion of a body over a surface is called Friction.

2. Rolling friction is lesser than sliding friction.

3.The irregularities on the surfaces in contact is the cause of friction between them.

4. Use of lubricants reduces the friction.

5.Streamlined shape of a car enhances drag due to air.

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