但係斜面係同咩比？因為查返KE同PE條formula都冇距離呢樣嘢，係咪要derive先出到點解？

睇呢課書前我完全無思考過點解要用斜面, 同原來斜面係會慳咗力。而慳咗力竟然係因為能量守衡定律 (由低到高點要行嘅距離長咗)
小六常識學啲乜
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Anthony Li
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Sep 13, 2022
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但係斜面係同咩比？因為查返KE同PE條formula都冇距離呢樣嘢，係咪要derive先出到點解？
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Written by Anthony Li386 Followers
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男班長 at KisaBBB’s Cantonese 101 (廣東話BB班) on YouTube (discontinued) | Proofreader in Central | Twitter/Instagram: merryanthony
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