A shell burns on contact with the ground and fragments fly in all directions with speeds…
Physics · JEE Main · NTA Exams — Kinematics
A shell burns on contact with the ground and fragments fly in all directions with speeds up to 40 m/sec. A man 80 m away is in danger for a duration of
- 4 s
- \(4 \sqrt{2}\) s
- \(2 \sqrt{2}\) s
- None of these
Answer
(B) 4 2 s
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