총알과 총알 충돌하면
<iframe width="1070" height="1903" src="https://www.youtube.com/embed/IT9BDVTBhA0" title="두 총알이 공중에서 부딪히면?" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>

