Ma= Arnold's Mass
Vai= Initial velocity of Arnold
Vbi= Initial velocity of the bullet
Vaf= Arnold's final velocity
Vbf= Bullet's final velocity
Arnold would have had to have flown backwards at 30,000 meters per second.
When it comes to how fast the victim would have flown backwards, the movie is wrong again. Assuming the bullet stuck in the victim, Vfv=Vfb=Vf, the movie's physics is all inaccurate.
Mb= Mass of the bullet
Vfv= Final velocity of the victim
Vfb= Final velocity of the bullet
Vib= Initial velocity of the bullet
Viv= Initial velocity of the victim
The victim would have had to been flying backwards at 37,000 meters per second.