Question

I. State true or false (also write the correct statement if it is false):
a) Friction acts perpendicular to the surfaces in contact.
b) Friction never acts on bodies at rest.
c) When a ball strikes a wall, the wall experiences lesser force.
I need your help please answer fast
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Answer 1

Answer:

a) False

b) True

c) False

Explanation:

a) Friction always acts along the surfaces in contact

c) In most of the case it experiences same force, however in some cases it experiences more(depending on coefficient of restitution , but NEVER less than the ball)

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