Question

Complete the sentence. Friction always ____________

a. helps the motion

b. opposes the motion

c. both of these

d. none of these

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Answer 1

B. Opposes the motion.

A marble rolling across a flat surface will not roll forever. This is due to friction. The marble rubs against the flat surface, slowing down until it finally stops.

Answer 2

B- Opposes the motion

Step-by-step explanation:

When two object touches each other. friction acts in a opposite direction to the motion of the object