12. Which of the following statement is true?
A. Friction makes an object slide. C. Force is needed to stop object.
B. Gravity pushes an object upward.si D. An object in motion will remain in motion.
13. Which of the following is an example of increasing friction?
A. polishing the floor
C. squirting oil into the door hinge
B. spreading sand on a wet floor
D. waxing the underneath of ice skates
14. A boy sits on a grassy slope. What force stops him from sliding down?
A. friction
B. gravity
C. weight
D. magnetic force
15. What force of friction is experienced by a body when it is at rest?
A. fluid friction
B. rolling friction C. sliding friction D. static friction



answer please hirap kasi e​