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We study the kinetic freeze out conditions of bulk hadrons in nuclearcollisions. The transverse and longitudinal momentum spectra of the identifiedhadrons produced in central Au+Au and Pb+Pb collisions, in the beam energyrange of $E_b = 2A - 158 A$ GeV are analysed for this purpose, within ageneralised non boost-invariant blast wave model. The kinetic freeze outtemperature is found to vary in the range of 55 - 90 MeV, whereas the averagetransverse velocity of collective expansion is found to be around $0.5c$ to$0.6c$. The mean longitudinal velocity of the fireball is seen to increasemonotonically with increasing longitudinal boost. The results would be usefulto understand the gross collision dynamics for the upcoming experiments at theFAIR and NICA accelerator facilities.

Kinetic freeze out conditions in nuclear collisions with $2A$ - $158A$ GeV beam energy within a non-boost-invariant blast-wave model