[lammps-users] Increasing velocity of impacting nanodrop is not applying properly by set command

Respected Users,
I am trying to simulate the impact of molten metal on diamond substrate with nvt ensemble. By increasing the velocity of ironball as in script the speed of moving metal reduces and the molten metal starts inflates instead of impact fastly to surface. Here are the script attached with different velocity.
Thanks for cooperation

in.pta7 (1.48 KB)

in.pta3 (1.48 KB)

in.pta4 (1.48 KB)

in.pta5 (1.48 KB)

in.pta6 (1.48 KB)

in.pta7 (1.48 KB)