With what velocity a ball be projected vertically so that the distance covered by it in \( 5^{\t...

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With what velocity a ball be projected vertically so that the distance covered by it in \( 5^{\text {th }} \) second is twice the distance it covers in its \( 6^{\text {th }} \) second \( \left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right) \)
[CPMT 1997; MH CET 2000]
(a) \( 58.8 \mathrm{~m} / \mathrm{s} \)
(b) \( 49 \mathrm{~m} / \mathrm{s} \)
(c) \( 64 \mathrm{~m} / \mathrm{s} \)
(d) \( 19.6 \mathrm{~m} / \mathrm{s} \)
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