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2005 WAEC Physics Theory  A ball is projected specific latent heat of ice = 3.4 x 10\(^{2}\) Jg\(^{-1}\) horizontally...

Physics
WAEC 2005

 A ball is projected specific latent heat of ice = 3.4 x 10\(^{2}\) Jg\(^{-1}\) horizontally from a height of 20m above the ground specific heat capacity of water = 4.2 Jg\(^{-1}\) K\(^{-1}\) with an initial velocity of 0.4ms\(^{-1}\). Calculate the horizontal distance moved by the ball before hitting the ground. [g = 10ms\(^{-1}\)]

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Explanation

R = \(U\sqrt{\frac{2H}{g}}\)

= 0.4 \(\sqrt{\frac{2 \times 20}{10}}\)

= 0.8m


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