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Physics, 24.08.2021 18:20 alenardbms7436

Người ta ném một hòn bi theo phương ngang với vận tốc ban đầu là 15m/s và nó rơi xướng đất sau 4s. Bỏqua sức cản của không khí và lấy g=10 m/s2. Hỏi hòn bi được ném từđộcao nào và tầm xa của nó là bao nhiêu?

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Người ta ném một hòn bi theo phương ngang với vận tốc ban đầu là 15m/s và nó rơi xướng đất sau 4s. B...
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