Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fragmentation of Colliding Discs   We study the phenomena associated with the low-velocity impact of two solid
discs of equal size using a cell model of brittle solids. The fragment ejection
exhibits a jet-like structure the direction of which depends on the impact
parameter. We obtain the velocity and the mass distribution of the debris.
Varying the radius and the initial velocity of the colliding particles, the
velocity components of the fragments show anomalous scaling. The mass
distribution follows a power law in the region of intermediate masses.

23
The categories of this paper are: solv-int
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas