๋ญฃ? ๋ฐ”๋ธŒ์‚ผ์„์‚ฌ๋ผ๊ณ ? ๊ฑฐ์ง€๋ผ ๋ชป์‚ฌ๊ฒ ๋Š”๊ฑธ




ํ˜„์žฌ ์ƒํƒœ = ์˜ˆ์ „์— ํŽ„๋ฌด์„ v1์“ฐ๋‹ค๊ฐ€ ๋ถ€์ˆœ ์ „์ ์žˆ์Œ.ย  ย ํ˜„์žฌ ์ฝ˜ํ”„์—์–ด, r1์“ฐ๋Š”์ค‘.