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Physics
Senior High
雯.
雯.

求解釋🙏

& f=20. 10. 棒球賽一名投手以水平速度108公里/時,擲出質量約為0.15公斤的 B 對原靜止棒球的加速時間約為0.15秒,則投手對棒球的平均施力約為多少牛頓? (A) 16 (B) 30 (C) 45 (D) 108 (E)200。 【103學測,答對率52%】 1000 108x3600 108 a = = 200 ( 3.6 =30m/s 0.15 F=ma=0.15x 30 x 0.15 F=0.15x200 =30(N.)
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