rigidbody.velocity = Vector3.zero์ด๊ฑฐ ์ถฉ๋์ค์ธ๋์ ์ ๋ฐ์ดํธ๋ก ๊ณ์ ๋๋ ค์ฃผ๋ฉด ๋ ๊น??
rb.velocity = Vector3.zero
CollisionEnter์ฐ๋๊ฐ TriggerEnter ์ฐ๋๊ฐ