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Physics, 17.07.2021 05:10 barattah

: Một viên đạn đang bay với vận tốc vo = 180 m/s thì gặp một bản gỗ dày và cắm sâu vào bản gỗ một đoạn s = 15 (cm) thì dừng lại. Hỏi cũng bản gỗ này, chỉ dày
d=10cm thì vận tốc viên đạn ra khỏi gỗ là bao nhiêu? Coi lực cản không đổi

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: Một viên đạn đang bay với vận tốc vo = 180 m/s thì gặp một bản gỗ dày và cắm sâu vào bản gỗ một đ...
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