One of my nemesis sneaked into my house when I was home alone. Inspired by the works of the great Kevin McAllister , I was already ready for situations like this B)
Fast forward to the climax...
We acquainted in the corridor where my punching bag trap was set up .
my punching bag trap 2.0
Assume that there is no time lapse between lever pull and the collision.
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The velocity of the bag and hence the kinetic energy is maximum at B leading to a greater momentum and a deadly punch :)