A particle is projected with a velocity v so that its range on a horizontal plane is twice the greatest height attained. If g is acceleration due to gravity, then its range is
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a
4v25g
b
4 g5 V2
c
4v35g2
d
4v5 g2
answer is A.
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Detailed Solution
Since R = 1Hv2sin2θg=2×v2sin2θ2 g 2sinθcosθ=sin2θ or tan θ=2 R=v2sin2θg =v22sinθcosθg=2v2 g×25×15=4v25 g
A particle is projected with a velocity v so that its range on a horizontal plane is twice the greatest height attained. If g is acceleration due to gravity, then its range is