ä¸€ä¸ªæŠ›å°„ä½“ä»¥ 45 åº¦è§’ä»¥ 20 m/s çš„åˆé€Ÿåº¦å‘å°„ã€‚ä¸è€ƒè™‘ç©ºæ°”é˜»åŠ›ï¼ŒæŠ›å°„ä½“åœ¨å…¶è½¨è¿¹æœ€å¤§é«˜åº¦æ—¶çš„é€Ÿåº¦æ˜¯å¤šå°‘ï¼Ÿï¼ˆä½¿ç”¨ \( g = 9.8 \, ext{m/s}^2 \)ï¼‰

Tue, 05 May 2026 11:47:16 +0000

Content under review