एखादी वस्तू 16 मीटर उंचीवरून जमिनीवर मुक्तपणे पडते. ज्या वेळेत तो जमिनीवर धडकेल:

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Bihar Police Constable Memory Based Paper (Held On: 1st October 2023 Shift 1)
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  1. 0.9 सेकंद
  2. 1.8 सेकंद
  3. 2.3 सेकंद
  4. 3.2 सेकंद

Answer (Detailed Solution Below)

Option 2 : 1.8 सेकंद
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योग्य उत्तर 1.8 सेकंद आहे.

Key Points

एखाद्या वस्तूला गुरुत्वाकर्षणाखाली मुक्तपणे पडण्यासाठी लागणारा वेळ सूत्रानुसार दिला जातो: t = √(2h/g)

जिथे:

t म्हणजे पडण्यासाठी लागणारा वेळ
h ही वस्तूची उंची आहे
g हे गुरुत्वाकर्षणामुळे होणारे त्वरण आहे (≈ 9.8 मी/से²)

या प्रकरणात, h = 16 m आणि g = 9.8 मी/से², म्हणून:

t = √(2 * 16 m / 9.8 m/s²) ≈ 1.8 सेकंद

म्हणून, वस्तूला जमिनीवर आदळण्यासाठी अंदाजे 1.8 सेकंद लागतील.

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