Friction acts on the object and it acts to the opposite which opposes the motion of the object.You just have to use Newton’s Second Law of Motion
When the interfering waves have an amplitude of zero the phenomena is called destructive interference.
It occurs when waves come together in such a way that they completely cancel each other out. When two waves interfere destructively, they must have the same amplitude in opposite directions it means that the waves are in 180° different phase from each other.
That would be false
Explanation: