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Name : Grade and Section: I. Read and analyze each item carefully. Choose the letter that corresponds to your answer. 1. It is defined as a push or pull that starts, stops or changes the direction of a moving object. A. Motion B. Force C. Energy D. Food 2. It is a force that opposes motion between two surfaces sticking or touching together. A. Gravity B. Electrical C. Friction D. Magnetic 3. Which has the greatest frictional force among these surfaces? A. Polished floor B. Tiled floor C. Wet floor D. Sandy floor 4. Friction is a force that opposes motion. It acts in the direction of a moving object. A. same B. opposite C. upward D. downward 5. Which of the following statements best describes friction? A. It is a force that occurs when surfaces touch each other. B. It is a force that occurs in smooth surfaces. C. It is a force that occurs between solids and liquids. D. It is a force that occurs only on rough surfaces. 6. When an object rolls over a surface is produced. A. Fluid friction B. Rolling friction C. Sliding friction D. Static friction -7. Which of the following statement is true about rolling friction? A. It is produced when an object is at rest. B. It is produced when an object is moving in water C. It is produced when an object is rolled in a surface. D. It is produced when an object rub against each other. 8. Which is an example of an object that can produce rolling friction when rolls over a surface? A. Ball B. Cabinet C. Shoe box D. Table 9. Riding a bicycle and using of wheelbarrow (kariton) are examples of. A. Fluid friction B. Rolling friction C. Sliding friction D. Static friction 10. Which of the following shows an example of rolling friction? A. A kite flying C. A soccer ball rolling on the ground. B. A paper boat floating. D. A picture frame on the table. 11. What is sliding friction? A. It occurs between two surfaces that come in contact with each other. B. It occurs in stationary objects or objects at rest. C. It occurs between moving objects and a liquid or between an object moving in the air. D. It opposes the motion of the wheel turning along a surface. 12. What type of friction occurs when there is more force needed to travel an object in a surface than rolling Friction? A. Static Friction C. Sliding Friction B. Fluid Friction D. Air friction 13. The following statements are examples of sliding friction EXCEPT ONE. Which is it? A. A block being slid across the floor C. A glass being pushed across the table B. Jeans on your legs when putting it on D. When a train goes around 14. Which type of friction opposes the sliding of objects over a surface? A. Static Friction C. Fluid Friction B. Sliding Friction D. Rolling Friction 15. Mucus produced by snails, help them move along the ground. How does the mucus help snails move? C. Mucus reduces friction. A. Mucus is cold. B. Mucus leaves a trail. D. Mucus makes the snail lighter.​

Sagot :

mickymike92

Since forces cause a change in motion or state of a body, friction is a force which opposes motion of an object over another.

What is frictional force?

Frictional force or friction is the force that opposes the relative motion of one object over another at their surface of contact.

The two types of friction are:

  • static friction and
  • kinetic friction

Rough surfaces experience the greatest friction while smooty surfaces experience the least friction.

Hence, friction can be reduced by lubrication or polishing.

Based on the property of forces and friction:

  1. Force is defined as a push or pull that starts, stops or changes the direction of a moving object.
  2. Friction is a force that opposes motion between two surfaces sticking or touching together.
  3. A sandy floor has the greatest frictional force among these surface.
  4. Friction is a force that opposes motion. It acts in the opposite direction of a moving object.
  5. Friction is a force that occurs when surfaces touch each other.
  6. Rolling friction is produced when an object rolls over a surface is produced.
  7. Rolling friction is produced when an object is rolled on a surface.
  8. Round objects like a Ball produces rolling friction.
  9. Riding a bicycle and using of wheelbarrow (kariton) are examples of rolling friction
  10. A soccer ball rolling on the ground is an example of rolling friction.
  11. Sliding friction occurs between moving objects and a liquid or between an object moving in the air.
  12. Static Friction occurs when there is more force needed to travel an object in a surface than rolling Friction.
  13. A train going around its tracks is rolling friction
  14. Sliding friction opposes the sliding of objects over a surface.
  15. Mucus produced by snails, help them move along the ground because Mucus reduces friction.

Therefore, it can be concluded that generally, friction opposes motion of an object over another.

Learn more about friction at: https://brainly.com/question/1424758

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