a) σ=D
b) Kinematic energy
c) ε=Dσ
d) KQ=F
Answer: c
Explanation: KQ=F by this we can obtain unknown displacement vectors. A displacement is a vector whose length is the shortest distance from the initial to the final position of a point P. It quantifies both the distance and direction of an imaginary motion along a straight line from the initial position to the final position of the point.
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