a) Distance: dynamic particles between the initial and final positions of the path length of the particles passed distance. Saran: an object moving in a certain change in the position of the particle displacement of the object. (B) Distance: Distance is just standard ; There is no direction. So it's scalar quantity. Saran: there is a shift in both the value and the direction of the vector sum. (C) Distance: Distance from a dynamic particle can not be zero. Saran: a dynamic displacement of particles can not be zero.