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Grade 10Mechanics

Please help me on the problem attached. The question has been re-posted.

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Profile image of Anushkha
9 Years agoGrade 10
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1 Answer

Profile image of Vikas TU
9 Years ago
Range is given that is root(3) meter.
Hence,
root(3) = 2u*sin120/g
u = root(20) => 2root(5) m/s
This would be the required speed.