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Gravity knife: Quiz

  

Question 1: Other knives commonly mistaken for gravity knives include the automatic OTF knife, the ________ and the butterfly knife (or balisong), the sliding knife and occasionally common folding knives (see penny knife).
Pocket knifeSwitchbladeBowie knifeGravity knife

Question 2: [1] Similar to a ________, it is made with a side-folding blade or an out-the-front (OTF), or telescoping, blade.
SwitchbladeBowie knifeGravity knifePocket knife

Question 3: A gravity knife is a knife that opens by the force of inertia or ________.
Introduction to general relativityGravitationGeneral relativityEquivalence principle

Question 4: The ________ handle trap door model, without spike is also produced in a civilian version with an all metal handle named the "silk ripper".
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